Review for Contacts Sidebar by ひらサブレ
Rated 5 out of 5 stars
for TB 3.0.3 User,
If you want use this add-on,You have to visit his site.
http://jpeters.no-ip.com/extensions/index.php?page=tb_cs_prerelease
To create your own collections, you must have a Mozilla Add-ons account.