https://coveryourtracks.eff.org/ https://coveryourtracks.eff.org/ from EFF does something similar using analysis of all the data shared by your browser. It also

https://coveryourtracks.eff.org/ https://coveryourtracks.eff.org/ from EFF does something similar using analysis of all the data shared by your browser. It also gives you a score of how unique your browser signature is as compared to other users