[mi3law]

I would change this "MailTheHouse.com will find your representative, print and then mail your letter for you so contacting your rep is as easy as sending an e-mail" into series of 2-3 bullet points. Emphasize the "finds your representative point"-- I doubt many people know who their reps are so this value prop. will be especially interesting.

Also, consider just collecting the email to reduce sign-up friction (or make it very clear that the first/last names are optional).

Very cool idea by the way-- is this to be a social for-profit? A non-profit? How do you plan on making money? Just curious.