Review for MinimizeToTray by Netscapist
Rated 5 out of 5 stars
It works with Fx 3.0.1. Just do the following:
1. open your minimizetotray.xpi with any archiver.
2. find install.rdf.
3. extract install.rdf.
4. open install.rdf with any text editor.
5. find em:maxVersion.
6. replace 2.0 (or something like it) with 3.1.0.
7. save install.rdf.
8. replace install.rdf in the archive with your new file.
9. install the extension.
To create your own collections, you must have a Mozilla Add-ons account.