That's probably the only good thing about Twitter then. The people making the site should be better rewarded than those at the top, that have less to do with it.

So if the stock price collapses, losses will decrease?

If their employee compensation, which includes stock-based compensation, decreases then their expenses will go down and their losses will decrease. Of course, presumably their ability to attract and retain employees will also decrease.

A lower stock price could translate into lower stock-based compensation costs but you'd have to dive into the details of what they issue and how they issue it.