Is the YouTube update from, for FF 22, genuine?

Today I received a pop up window with a YouTube update, supposedly to support Firefox 22. as I have no knowledge of FF 22 and am still using what I believed to be the latest upgrade, FF 18.02, I did not believe it was genuine. Can you inform me if this is a genuine Firefox update please? Website is, I have never heard of this site before.

↓ Show more ↑ Show less
  • All posts
  • Helpful Solutions
  • solution
  • owner