Handycons is a free, hand drawn social media icon set that contains 12 icons. Package contains icons for del.icio.us, Digg, Mixx, DesignBump, StumbleUpon, Reddit, Developer Zone, DesignFloat, Technorati, Twitter and RSS feed & Email icon, of course. All icons are available in four sizes: 16×16, 24×24, 32×32 and 48×48 pixels.
UPDATE (march 2009): There is Handycons2 icon set released in February 2009
I made it using ArtRage and my Wacom Intuo 3 ;)
Note: This post has disappeared for a couple of days. I blame Windows Live Writer for this. Sorry!