I've found that it's quite a good source of information on legitimately good or interesting technology companies in various cities. Once you look outside Silicon Valley, it can sometimes be surprisingly hard to figure out what the good companies are, if any, in a given city. My experience is that the good companies typically have at least a profile or job posting on there.

(And if you're a good company and you have neither of those, I recommend getting one if you can afford it -- not sure what the cost is.)