To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseDeveloper reply by Diego Casorran
Rated 2 out of 5 stars
And i don't know what to do.....:(
I have last official Firefox version and windows 7 x64
Hello, it works fine for me, for example here: http://www.reddit.com/r/videos/
What Firefox version and OS are you using?
To create your own collections, you must have a Mozilla Add-ons account.