Given all the abandoned assets on Second Life - for which many people paid real money - I'm not sure that being a geek accessory is a good thing.
Did you read the article yet? http://nwn.blogs.com/nwn/2011/07/edward-castronova-bitcoin.html?
This blog post is so inane that it's only effect will be to discourage the people whom we don't want in yet anyway. I bought some BTC with linden dollars two months ago and I am still way ahead for doing so, even after the crash.
Wow, that's probably the first such blog post I actually felt compelled to respond to. Hope you enjoyed reading it.