Great interface, needs a little descriptive text.
I like the clean lines, bold color and graphic design of your tool. A few lines of description or clarification would simplify things a little. It is a 'pretty site' but it's not 'intuitively obvious' the first time you use it. There is A LOT of value here, but it's easy to miss it, for a new user.
This is (mostly) the same problem as the guy that put 2 points into it above - about the entry point, and how it is a little confusing. I agree with his comment on need to delete default text before you can type anything. So I am cutting my single point here, and pushing it to his post.