Is this browser extension legit? (1 Viewer)

[MrFox]

http://sharemenot.cs.washington.edu/
a friend recommended that i dl it to block social media sites from tracking my activity. i wanted to know if anybody here had any experience with this or a similar extension?

 

[Absolutezero]

I've got these two:

https://chrome.google.com/webstore/detail/jeoacafpbcihiomhlakheieifhpjdfeo

https://chrome.google.com/webstore/detail/epanfjkfahimkgomnigadpkobaefekcd

Which are legit, and perform a similar function.