Rated 4 out of 5 stars

Categorize is a great tool for (powerful) bookmarks addicts who need to bookmark and easily find back a lot of web URLs. And it keeps improving over the time. I find Categorize at its best when used on par with Zotero and a sync tool (rsync in this location).
However stopped to work in this location since last update 0.9.6.7 and the 'Report Error' does not work. Will try to fill a detailed report.

This review is for a previous version of the add-on (0.9.6.7). 

I have updated the bug reporting dialog in newer versions of Categorize. It should work correctly now. Additionally, you can directly post a bug to the support forum and ask for help there.