From the site:

> We split up your donation intelligently with a randomized algorithm

Your description here on HN gives some confidence that something hopefully intelligent is going on. The description on your website is not going to give anyone (nerd or not) a compelling reason to use your site.

My suggestion would be to take the content, text, and layout of your website as seriously as you took the algorithm if you want anyone to use of this cool bit of math and code you built.