Battlenet bots are programs that log onto battlenet (the online system for blizzard games like Starcraft, Warcraft, Diablo) you can use these programs to organize clans, execute shell Vb command, fastforward/rewind winamp. the mosty commonly used bot is Stealthbot
I would say it would be okay to host them, as long as you aren't violating any copyright laws. Perhaps you should contact the official battlenet bots website and ask their permission.
Let's let an x10 administrator answer this question, too.