Don't want to 'like' tweets? Why not raise a glass? Always drink responsibly!
Liked twitter stars? Maybe you just hate hearts?
I don't know about you, but all this debate is making me mighty thirsty...
Updates:
Version 1.0.3: replaces hearts in the Notifications tab
Version 1.0.2: icons for extension
Version 1.0.1: new icon injection works with new tweets