This extension is good tool and used frequently to download important university lectures from world over ...which then my sons watch and have got good grades at local college.
Thanks to this tool , we download those lectures and plug the mp4 file on old tvs thus saving us from buying 2 extra expensive smart TVs... effectively this extension has saved me close to 50k INR. I urge all others to donate $20 each basically peanuts to what it helped save. I work in S/w industry and know a good product with potential when i see one and funding can help the team get motivated to solve some glitches this great product ( but under appreciated i see)