So... why would Bluedev be taken? To me it's a fairly out there name but maybe there's a reason why more than yourself would be using it perhaps.
To prove a point to my sister on her computer I agreed to set up an AIM account at home. I had to chose a screen name so I picked something from a story I'd written years ago: 700yearknight (ish... not giving my secrets away, precious...)
It was already taken. Frankly this boggled me. I ended up going with vapidotter (vapid otter - about my thirtieth pronoun-animal combination before I got one that wasn't taken). I'm still amazed at the scale of the internet and yet how similar a lot of our thinking is. I've been toying around with http://www.20Q.net recently and I think it's a good example of this. The real question is: if everybody used it would it become perfect, or become useless?