every website can still detect it's firefox

90% of all apps that dont want to run in Firefox, still dont run in fire fox. This is literally useless.

Literally broke youtube..... Broken code. Fix it

Not very effective at masking. "whatismybrowser" will still pick up that the browser "looks like firefox"; and so will many other sites.

Here it does nothing. For instance, on Google search (www.google.com) using Chrome we have that "Search Labs" option/icon up on the right of the page. Using Firefox we don't see that, even enlabling this extension to act on that page.