The zip file includes 3 sizes for 17 icons: 128×128, 64×64 and 32×32. There is an icon for the following: Blogger, Delicious, DesignFloat, Digg, Facebook, Flickr, Google, a heart icon that will work for anything (such as bookmark), MySpace, Reddit, an RSS icon, StumbleUpon, Technorati, Twitter, WordPress, Yahoo! and YouTube.