[tsm]

If you use Firefox, I recommend the It's All Text! plugin, which opens $EDITOR in a new window and seamlessly transfers its contents into the textfield you care about.

I think a Chrome version is in the works, but there's nothing releasable yet.

[niuzeta]

I use vimium for chrome; it's wonderful.

[tsm]

I use and enjoy vimium too...but it doesn't help with editing text fields.