So far this extension works well, though I have to mention that Firefox Sync only works through Dropbox which is a bit limiting. Setting that aside, I think it would be great if the reading list could include sorting and categorization features. This would make it much easier to keep saved articles organized and find them again later by browsing through specific categories

Reviews saying this syncs through Firefox are incorrect - this syncs ONLY through Dropbox. Useless to me, I'll just make a "Read Next" bookmarks folder, FF will sync it for me to all my devices. No need to add yet another extension and slow my browsing to a crawl.

Blows the competition away. This is a really lovely looking app and the "add to read next" icon on the toolbar is really in-keeping with Firefox's own icons, and the reading list side-bar is nice and compact. Nice one!