Ray Cheung recently published a link to a download pack which contains 21 PNG+PSD Web 2.0 icons. The icons were created by ilemoned and miniajax. Application developers or widget developers may find these icons handy as they are crisp and of very high quality. To download the social-media-icon pack, click on the image at the bottom of this post. The following icons are included in this pack.
*UPDATE* I know there are quite a few people finding this post via Google. The link to the download pack has been taken off line. After contacting who I believed to be the creator of the pack about the link, I have yet to receive a reply back. In the mean time, please visit a more recent post which contains a link to icon packs similar to the ones that are showcased in this one. 20 Awesome Free Icon Set