I was an advance agent of the Yahoo! Empire you see.
Actually, it's just a coincide that I joined tumblr almost precisely a week before Yahoo! acquired the site (no conspiracy, I promise!). I have friends who use the site so I figured why not see what it was all about.
So if you guys haven't been frightened away by our new corporate overlords, I'd be willing to follow you and vice verse. Then we can all share cat gifs, bad fan art, and porn! The address for my feed is pretty simple; it's just my io9 handle.