And if you want to contribute, come join us! http://tosdr.org/contribute.html
We are a completely non-profit and open-source project. Source at http://github.com/tosdr and API at http://tosdr.org/api.html
Please note though that nothing in the page is legal advice. We just want to help people know a bit better what Terms of Service say.
You need to put in the version / date of these ToS, otherwise it would be hard to update. I would also keep an archive of all the ToS on your servers since volunteers would like to use track changes as a new version is published rather than re-reading the ToS. It would be also interesting to see how the terms have changed through the years.
A great feature would be to categorize these services by category. Eg: for search engine: Bing, Google, DuckDuckGo. You could add a more comprehensive chart on the terms and how it compares across these services. Eg: Tracking: Google keeps ur data. DuckDuckGo does not track user data.
I also suggest that I can click into the brief description which will bring us to the exact term in question and highlight any other relevant terms. This may increase the chances of people reading the ToS and also increase participation. If I was reading a term on your site and I was referred to the actual term and realized that ToS;DR is incorrect, i would likely to correct it.
I think one issue with a service like this, is that your rating of TOS provisions might not match with my own. Which is why it's great that you link your rankings to discussions of provisions and their rating.
Also, HTTPS Everywhere http://eff.org/https-everywhere