How about some good old promotion? Contact bloggers and try to get some PR. Here's a few good articles that have been mentioned in HN:

http://blogs.balsamiq.com/product//2008/08/05/startup-market... http://blog.zferral.com/post/972974853/startup-marketing-get... http://jasonlbaptiste.com/featured-articles/how-i-pitched-te... http://blog.traindom.com/places-where-to-submit-your-startup...