Releasing startup soon -- Constructive criticisms needed for "buzz" page

HN,

  I know all you guys have a short time so I’ll try to be as quick as possible.  A friend and I are going to release our startup in about two months that will be a social approach to rating, buying, sharing and collecting coffee.

37signals “getting real” is a book I hold close and dear and they recommend to get out a “buzz” page to collect contacts. So I built a simple one with a few features:

- Linked up to fb instead of asking for emails for social proofing and its a lot easier to “like” something than give up your email address.

- Showed my friends screenshots to get quotes, linked to their twitter accounts to give credibility

- Since its not released it hasn’t been featured in any outlets, I did however submit it to some of the leading “link dumps” and put their logos in there. Even though being seen on digg isnt a big deal, the logos add credibility

- Offered incentives that will be followed up on: early adopter badges and early invites.

What I’d like from you guys: 1. Like it if you like coffee. I’d be smitten.

2. What would you do to make a more efficient and effective buzz page to collect user bases? What pearls of wisdom do you have to market and grow a new web app/startup?

3. If you are a coffee drinker, how do you think technology can be used to make your coffee experience better? What would you really like to see in future iterations of a coffee application? (Some early requests from friends has been to add coffeehouses in the mix)