No it wouldn't. These things exist, and they're not very popular at all. In fact, if you do some digging you'll find that there are already such bots in existence. They're already employed on networks like AIM and ICQ but for evil purposes rather than good ones. Most people ignore them.
Anyway.. bottom line is that people have already made such bots, you should probably google for them, because that would save you time in making your own. "IRC ai talk bot" is a good starting point
