csswebsite: "Css Website is an innovative gallery of simple websites. Its purpose is to showcase designer’s work and to expand the CSS design community. We propose a classification by color and contents for a better usability." (from their About page)
They have a nice assortment of web sites to gain inspiration from. You can browse by Color, by Content, by Date, or just type in a search term. They also allow you to rate each site 1 to 5 stars.
Popularity: 7% [?]