Excellent addon that allows you to remap all keys (essential). BUT. The reason I give it 4 stars instead of 5 is because I recently fell onto a bug while browsing cpubenchmark.net and I had to switch to Vim Vixen :( To replicate the bug, go onto that site and search something pressing enter. Then start a new search... problem! Until this bug is fixed I can't give this the 5 stars it deserves :(