Hands down, the best Firefox add-on! Rated 5 out of 5 stars
Hands down, the best add-on I have ever used Firefox, mind you I have used over a hundred of them.
Instant access to Google Translate is faster than the native translation in Google Chrome. Xmarks lets you find similar sites in a jiffy. Cache, URL shortener, link checker, Flagfox is truly a smorgasbord of essential tools and services.
Kudos to the developer for such a fantastic add-on!