Let me rephrase my question since it apparently got a flippant response.

I have a script that already does this locally, it stores it using FileSystem API to the browsers internal storage, so only the person using it can look at the data.
I don't know how well such a script would be recieved by the community at large, and as you said, it would only work if people used it. Would it be worthwhile to A. modify it, and B. setup a server to recieve/parse/run stats on the data in your opinion? Would people use it to get everyone the data so we all benefit, or would people be too paranoid/hateful of the idea of scripts?