Congratulations on making a beautiful website that clearly shows what it does, makes me want to sign up and use a simple, clean interface. Seriously, this is a breath of fresh air and credit to you. Great idea too, will certainly give it a try.
Side note: Who made the "superheroes" on your homepage? I need something similar and would like to get in touch with them.
Thanks so much for the kind words!
Email me (in my profile) and I'll shoot you their contact info.