Great post. I've used LaunchRock (widget, not the whole page setup), would definitely recommend it.
The FAQ says I will get an account after getting 3 people to sign up. Bahh. I just want to check out the features and I have to spend effort in marketing your site? Thanks but no thanks.
Would love to hear your thoughts on my own start-up, Kickofflabs: http://www.kickofflabs.com
No gimmicks, tricks, etc. Just a solid product with fanatical support.