While "Stumbling" across design articles I found an article which really hits home for designing Web 2.0 sites. There has always been a good look and feel for sites like flickr and youtube, but this article explains the breakdown of their design really well. Showing how they tend to use alot of soft curves in both their borders and their text along with the use of much larger fonts than ever before. The reasons they do this to try to show the user they are "easy to use" almost like a kids site is very interesting.

Read the Article @ Pixel Acres