Here is another free pack of social media icons: RSS, Twitter, Facebook, Vemo, YouTube and deviantART. In this pack I created two different styles at 48px and 32px. I also included the design PSD and PNGs for each icon. You can easily change both background colors and icon colors.
Here are 5 free social media icons that I use the most. Icons included are Twitter, Facebook, DeviantArt, YouTube and Stumbleupon. I kept the design basic so one could add what ever icon they want easily.