I have https://writeyourrep.org I started it in January and the total revenue is $800 or so. We've sent about 500 letters to congress so far.
A few suggestions for you:
- For the Rep lookup, you should probably plug the user's address into a geocoder, and figure out who their rep is - I'll be the vast majority (maybe even 90% or more?) of voters aren't sure who their rep is. You should also remind them that they can and should write to both senators. - Also, you might want to include a mad-lib style fill-in-the-blanks template on some major issues of the day, for those people who are extremely short on time, and even ask submitters if you can share their letters anonymously with others as a template. Even add popularity ratings for later users to easily get to the most popular letters.
Again, great idea. Good luck with it!
I built the site because the only way to get what you want is by voicing that you want it. It's especially important presently due to an increasing disconnect between Congress and citizens. Our system of government functions best with a politically active population. Otherwise the will of the people is impossible to express and the laws become the will of the few.
I've mailed several letters to lawmakers and it's a tedious process, but ultimately necessary as letters actually stand out, while email blends into the noise. Removing the encumbrance of mailing the letter enables participation in government, something I believe in very strongly.
Have you thought about extending this to say city councils or mayor's office also.
There are tons of local small problems, which can be sorted out by city offices, only if they are pointed out in a positive manner, but people do not do so.