Do you use Firefox? Do you use Facebook? Then there’s good news for you! As of version 17 Firefox now comes with “Social API” which will make it possible for social network features to be accessed straight from Firefox.
Right now it only does Facebook but should eventually include most other major social sites such as Twitter. It makes Firefox a bit like Flock used to be back with Flock 2 before they released the disappointment that was Flock 3.