This isn't just stopping facebook but stopping Yahoo from posting all those annoying ads while I read my mail. They have asked me to remove it. HA.

Lovely, to be able to prevent Facebook from tracking me. Thank you!

I'm pretty sure it is good (no problems so far, using it for several months), but found it even better just deleting my FB account. :D

Tab opened in new Container will be very slow

Yes just today added app