Have you really thought about this? You don’t really want Twitter to make money. Debate on this usually makes me cringe because arguments typically stem from fandom without thought for what happens later.
If you’re a diehard fan of the Twitter service, rooting for their profitibility is counter-productive. You should realize a move towards real revenue is going to affect the Twitter experience, and almost certainly in a negative way.
Or at least in a way that will affect Twitter’s value to you.
Personally, as someone in technology and media, I want @biz to bring in the green and prove web companies can rake in cash. But I understand that when this happens, the value proposition of Twitter for my needs will negatively change.