Many have noticed that I've shut down my Twitter account. No, I wasn't suspended and no, I'm not having a mid-life crisis meltdown. I finally "got smarts" and did the math: Twitter costs me a lot more than I get from it.
I've always been a major proponent of Open ID. I love the idea and the intention - it's a great solution to a long-standing problem and solves a lot of issues for developers. Unfortunately it creates a ton more for business owners.