Disabling Vimium is a bit overkill, you can press "i" to go into insert mode and it'll let you do as you please...if you use it more often, though, it's best to blacklist it.
I didn't know about the insert mode thing for a long time, but when I figured it out it was a "duh" moment :)
I didn't know about the insert mode thing for a long time, but when I figured it out it was a "duh" moment :)