Review for Hide Menubar by Racerblaids
Rated 5 out of 5 stars
Link below is spam that makes you look at ads, then wait for a minute. Here's direct link with no BS.
http://forum.moztw.org/download/file.php?id=10128&sid=295084c9ef8bff528ca676418bc5b109
To create your own collections, you must have a Mozilla Add-ons account.