Hello, I've just looked at your site and it's absolutely brilliant.

I personally would prefer to see the stress not marked in red but with the traditional stress mark (eg Боло́то). Again personally, I would get rid of the English transliteration beneath, but maybe some people would find that useful.

The best feature is the ability to enter a site address and have it displayed with the stress added (this time in the traditional way).

It's a great idea and I hope you make loads of money from it. If you want me to be a "guinea pig" for it, please get in touch!