Bonus functionality:
- Poll expiry time, at which time insobot may auto-announce the result
- Multiple concurrent polls, identifiable by an ID (tautologous much?)
- Polls history, most probably /query'd to the invoker or viewable on a webpage, to avoid spamming the chat
- A fancy little image graphing the result, probably generated using ImageMagick's MagickWand or (more powerfully) MagickCore API