They don't sell anything to anyone. The site was acquired and is operated by Clearspring, who has received $36M in funding.
All of these widget companies seem like a bit of a scam to me. Do you really need $36M to create a bunch of crappy widgets? I've never even seen a widget from RockYou/Slide/Widgetbox/Clearspring on any of the sites I visit.
I couldn't agree more with how much money is spent on the lamest things... $36M for widgets. Then again, back in the 90's, people would pay thousands to have a counter installed on their page.
http://www.techcrunch.com/2009/01/06/clearspring-lays-off-20...