Great. Perhaps custom text? Rated 5 out of 5 stars
This add-on is awesome, as I can easily share webpages and articles from website which don't have the Facebook Like button, without having to create a huge link on my Wall!
But perhaps it's nice to customize the text of the single-line "Like"-feed. As pages have huge or ridiculous titles sometimes and therefore are hard to share seriously... Perhaps only the first "page title" part customizable to prevent spam and such. I mean, look at the page title of this Firefox page. It's hard to share that via the Like button: much too long and too much useless words for a shared link...
But anyway, it's made my internet experience 99% better!