I had a run in with linkedin a couple years ago and all I could think of is what a waste of time it was. It certainly deterred me from joining but I've been hitting nearly every social network pretty hard and I figured linkedin is my next venture. I'm building up a brand at the moment, but I also plan on using it for personal. Is it worth it for me? I'm pretty well versed in IM but I got the vibe as its more of a professional work environment, which I'm not really about.