diff --git a/ProjectPlugins/GethPlugin/EthTokenExtensions.cs b/ProjectPlugins/GethPlugin/EthTokenExtensions.cs
index f9a9d8a..d85533a 100644
--- a/ProjectPlugins/GethPlugin/EthTokenExtensions.cs
+++ b/ProjectPlugins/GethPlugin/EthTokenExtensions.cs
@@ -28,7 +28,13 @@
 
         public override string ToString()
         {
-            return $"{Eth} Eth";
+            var weiOnly = Wei % TokensIntExtensions.WeiPerEth;
+
+            var tokens = new List<string>();
+            if (Eth > 0) tokens.Add($"{Eth} Eth");
+            if (weiOnly > 0) tokens.Add($"{weiOnly} Wei");
+
+            return string.Join(" + ", tokens);
         }
     }
 
diff --git a/Tools/BiblioTech/AdminChecker.cs b/Tools/BiblioTech/AdminChecker.cs
index def2870..00e7b6a 100644
--- a/Tools/BiblioTech/AdminChecker.cs
+++ b/Tools/BiblioTech/AdminChecker.cs
@@ -27,9 +27,9 @@ namespace BiblioTech
             return channel.Id == Program.Config.AdminChannelId;
         }
 
-        public ISocketMessageChannel GetAdminChannel()
+        public async Task SendInAdminChannel(string msg)
         {
-            return adminChannel;
+            await adminChannel.SendMessageAsync(msg);
         }
 
         public void SetAdminChannel(ISocketMessageChannel adminChannel)
diff --git a/Tools/BiblioTech/BaseCommand.cs b/Tools/BiblioTech/BaseCommand.cs
index 44695fd..a586471 100644
--- a/Tools/BiblioTech/BaseCommand.cs
+++ b/Tools/BiblioTech/BaseCommand.cs
@@ -1,6 +1,7 @@
 using Discord.WebSocket;
 using BiblioTech.Options;
 using Discord;
+using k8s.KubeConfigModels;
 
 namespace BiblioTech
 {
@@ -25,16 +26,13 @@ namespace BiblioTech
             catch (Exception ex)
             {
                 var msg = "Failed with exception: " + ex;
-                if (IsInAdminChannel(command))
-                {
-                    await command.FollowupAsync(msg.Substring(0, Math.Min(1900, msg.Length)));
-                }
-                else
-                {
-                    await command.FollowupAsync("Something failed while trying to do that...", ephemeral: true);
-                    await Program.AdminChecker.GetAdminChannel().SendMessageAsync(msg);
-                }
                 Program.Log.Error(msg);
+
+                if (!IsInAdminChannel(command))
+                {
+                    await command.FollowupAsync("Something failed while trying to do that... (error details posted in admin channel)", ephemeral: true);
+                }
+                await Program.AdminChecker.SendInAdminChannel(msg);
             }
         }
 
@@ -62,5 +60,20 @@ namespace BiblioTech
             if (IsSenderAdmin(context.Command) && targetUser != null) return targetUser;
             return context.Command.User;
         }
+
+        protected string Mention(SocketUser user)
+        {
+            return Mention(user.Id);
+        }
+
+        protected string Mention(IUser user)
+        {
+            return Mention(user.Id);
+        }
+
+        protected string Mention(ulong userId)
+        {
+            return $"<@{userId}>";
+        }
     }
 }
diff --git a/Tools/BiblioTech/Commands/GetBalanceCommand.cs b/Tools/BiblioTech/Commands/GetBalanceCommand.cs
index 9454c79..8d2460d 100644
--- a/Tools/BiblioTech/Commands/GetBalanceCommand.cs
+++ b/Tools/BiblioTech/Commands/GetBalanceCommand.cs
@@ -28,6 +28,7 @@ namespace BiblioTech.Commands
             if (addr == null)
             {
                 await context.Followup($"No address has been set for this user. Please use '/{userAssociateCommand.Name}' to set it first.");
+                await Program.AdminChecker.SendInAdminChannel($"User {Mention(userId)} used '/{Name}' but address has not been set.");
                 return;
             }
 
diff --git a/Tools/BiblioTech/Commands/MintCommand.cs b/Tools/BiblioTech/Commands/MintCommand.cs
index d3d2451..b5cb933 100644
--- a/Tools/BiblioTech/Commands/MintCommand.cs
+++ b/Tools/BiblioTech/Commands/MintCommand.cs
@@ -28,6 +28,7 @@ namespace BiblioTech.Commands
             if (addr == null)
             {
                 await context.Followup($"No address has been set for this user. Please use '/{userAssociateCommand.Name}' to set it first.");
+                await Program.AdminChecker.SendInAdminChannel($"User {Mention(userId)} used '/{Name}' but address has not been set.");
                 return;
             }
 
@@ -42,9 +43,17 @@ namespace BiblioTech.Commands
                 mintedTokens = ProcessTokens(contracts, addr, report);
             });
 
+            var reportLine = string.Join(Environment.NewLine, report);
             Program.UserRepo.AddMintEventForUser(userId, addr, sentEth, mintedTokens);
+            await Program.AdminChecker.SendInAdminChannel($"User {Mention(userId)} used '/{Name}' successfully. ({reportLine})");
 
-            await context.Followup(string.Join(Environment.NewLine, report));
+            await context.Followup(reportLine);
+        }
+
+        private string Format<T>(Transaction<T>? transaction)
+        {
+            if (transaction == null) return "-";
+            return transaction.ToString();
         }
 
         private Transaction<TestToken>? ProcessTokens(ICodexContracts contracts, EthAddress addr, List<string> report)
diff --git a/Tools/BiblioTech/Commands/UserAssociateCommand.cs b/Tools/BiblioTech/Commands/UserAssociateCommand.cs
index 81e4646..1fc6d63 100644
--- a/Tools/BiblioTech/Commands/UserAssociateCommand.cs
+++ b/Tools/BiblioTech/Commands/UserAssociateCommand.cs
@@ -1,4 +1,8 @@
 using BiblioTech.Options;
+using Discord;
+using GethPlugin;
+using k8s.KubeConfigModels;
+using NBitcoin.Secp256k1;
 
 namespace BiblioTech.Commands
 {
@@ -23,30 +27,56 @@ namespace BiblioTech.Commands
         protected override async Task Invoke(CommandContext context)
         {
             var user = GetUserFromCommand(optionalUser, context);
-            var data = await ethOption.Parse(context);
-            if (data == null) return;
+            var newAddress = await ethOption.Parse(context);
+            if (newAddress == null) return;
 
             var currentAddress = Program.UserRepo.GetCurrentAddressForUser(user);
             if (currentAddress != null && !IsSenderAdmin(context.Command))
             {
                 await context.Followup($"You've already set your Ethereum address to {currentAddress}.");
+                await Program.AdminChecker.SendInAdminChannel($"User {Mention(user)} used '/{Name}' but already has an address set. ({currentAddress})");
                 return;
             }
 
-            var result = Program.UserRepo.AssociateUserWithAddress(user, data);
-            if (result)
+            var result = Program.UserRepo.AssociateUserWithAddress(user, newAddress);
+            switch (result)
             {
-                await context.Followup(new string[]
-                {
+                case SetAddressResponse.OK:
+                    await ResponseOK(context, user, newAddress);
+                    break;
+                case SetAddressResponse.AddressAlreadyInUse:
+                    await ResponseAlreadyUsed(context, user, newAddress);
+                    break;
+                case SetAddressResponse.CreateUserFailed:
+                    await ResponseCreateUserFailed(context, user);
+                    break;
+                default:
+                    throw new Exception("Unknown SetAddressResponse mode");
+            }
+        }
+
+        private async Task ResponseCreateUserFailed(CommandContext context, IUser user)
+        {
+            await context.Followup("Internal error. Error details sent to admin.");
+            await Program.AdminChecker.SendInAdminChannel($"User {Mention(user)} used '/{Name}' but failed to create new user.");
+        }
+
+        private async Task ResponseAlreadyUsed(CommandContext context, IUser user, EthAddress newAddress)
+        {
+            await context.Followup("This address is already in use by another user.");
+            await Program.AdminChecker.SendInAdminChannel($"User {Mention(user)} used '/{Name}' but the provided address is already in use by another user. (address: {newAddress})");
+        }
+
+        private async Task ResponseOK(CommandContext context, IUser user, GethPlugin.EthAddress newAddress)
+        {
+            await context.Followup(new string[]
+{
                     "Done! Thank you for joining the test net!",
-                    "By default, the bot will @-mention you with test-net reward related notifications.",
+                    "By default, the bot will @-mention you with test-net related notifications.",
                     $"You can enable/disable this behavior with the '/{notifyCommand.Name}' command."
-                });
-            }
-            else
-            {
-                await context.Followup("That didn't work.");
-            }
+});
+
+            await Program.AdminChecker.SendInAdminChannel($"User {Mention(user)} used '/{Name}' successfully. ({newAddress})");
         }
     }
 }
diff --git a/Tools/BiblioTech/Transaction.cs b/Tools/BiblioTech/Transaction.cs
index a19814a..be2c828 100644
--- a/Tools/BiblioTech/Transaction.cs
+++ b/Tools/BiblioTech/Transaction.cs
@@ -10,5 +10,11 @@
 
         public T TokenAmount { get; }
         public string TransactionHash { get; }
+
+        public override string ToString()
+        {
+            if (TokenAmount == null) return "NULL";
+            return TokenAmount.ToString()!;
+        }
     }
 }
diff --git a/Tools/BiblioTech/UserRepo.cs b/Tools/BiblioTech/UserRepo.cs
index 7cd03fd..35d8ec8 100644
--- a/Tools/BiblioTech/UserRepo.cs
+++ b/Tools/BiblioTech/UserRepo.cs
@@ -10,7 +10,7 @@ namespace BiblioTech
         private readonly object repoLock = new object();
         private readonly Dictionary<ulong, UserData> cache = new Dictionary<ulong, UserData>();
 
-        public bool AssociateUserWithAddress(IUser user, EthAddress address)
+        public SetAddressResponse AssociateUserWithAddress(IUser user, EthAddress address)
         {
             lock (repoLock)
             {
@@ -134,18 +134,19 @@ namespace BiblioTech
             return null;
         }
 
-        private bool SetUserAddress(IUser user, EthAddress? address)
+        private SetAddressResponse SetUserAddress(IUser user, EthAddress? address)
         {
             if (GetUserDataForAddress(address) != null)
             {
-                return false;
+                return SetAddressResponse.AddressAlreadyInUse;
             }
 
             var userData = GetOrCreate(user);
+            if (userData == null) return SetAddressResponse.CreateUserFailed;
             userData.CurrentAddress = address;
             userData.AssociateEvents.Add(new UserAssociateAddressEvent(DateTime.UtcNow, address));
             SaveUserData(userData);
-            return true;
+            return SetAddressResponse.OK;
         }
 
         private void SetUserNotification(IUser user, bool notifyEnabled)
@@ -245,4 +246,11 @@ namespace BiblioTech
             }
         }
     }
+
+    public enum SetAddressResponse
+    {
+        OK,
+        AddressAlreadyInUse,
+        CreateUserFailed
+    }
 }