Rules to aggregate tags

Apr 2, 2009 at 9:30 AM
In a recent review, someone asked "Have you thought about tags with a space in them though? "

Yes we have, and we have decided to trim spaces, remove hyphen and other non alphanumerical characters. That's because people can refer to the same thing when they write "web part" or "webpart" for instance. And actually, we follow the same rule than flickr.

However we could introduce more character to have speical meanings. The underline could be use as a space, for instance...

What do you suggest?