I put up a landing page, which probably hasn't generated any buzz, but has allowed me to capture a very healthy amount of emails.
I don't necessarily share your 'perfect or nothing' mindset for launch, but there are a lot of features that we're looking to throw out for launch, and can safely push back to a later date.
Most of what I'm calling 'crap' is just incomplete though, and some of these things can be pulled together quickly... others, not so much.
Good luck on yours as well. I look forward to seeing it.
I'm of the opinion that it doesn't mater how many (or how few) features you have, or even if what you have works, but what is paramount is that the UX is perfect. Not a single thing can be wrong with what you release. Anything that is will just scare away potential customers and give yoyu a rep for building crap.