If my memory serves me right, there is a way to get flash to render text which appeared as HTML, so that designers were not limited to web-friendly fonts.
They do seem to have quite a few features in their website, but its crazy they can get away with making the profiles completely open to public. Traffic estimates shows 15,999,000 visitors in the last 30 days, while they have a page rank of 3 - crazy. Either it's viral, or spam.