Yeah... so this isn't really the best/most useful program out there, but I was bored. It will send a chat message you define at intervals you also define on most channels.
virusscan: Virustotal. MD5: 07c1895b30299b452671939b49bfade4 Suspicious File
DL: BoomBox Chat.exe
oh yeah it's coded in AutoHotkey, an AutoIT like language which also gets some false positives.
If enough people are interested, I might make another version with whisper functionality, defining your own channels, and multiple whispers/channels at once.
I'm also open to ideas.
EDIT: I just remembered, since it uses keystrokes and stuff you can't really be playing when it's running if you use your keyboard at ALL. use the mouse to move and click the buttons and maybe you can pull it off.
2nd EDIT: I meant Autohotkey, an AutoIt TYPE language
3rd EDIT: Allright, it seems like that it doens't work very well as of now. In a little while i'll fix it, it may work or it may not.
4th EDIT: Updatd download link with stable and working version