Can Twitter make money

A thought today, as I was working on adding a background to my twitter page I thought it would be great if this were like my blog or site.
Twitter needs to find a business model – so

One of the missing features is the ability to have links on the ‘twitter background’ and this is worth paying for – what about offering for a sum the ability to have an active link in the background area? pay per additional link and pay to have an RSS feed.

I want Twitter to survive and if the sums are right I think this could ensure the future of this brilliant service.

Twitter people are you listening?