Message button in addition to Rematch

After a game is over, the default page has Rematch available as a shortcut.

I think it'd be nice to have Message available there, to message your opponent. Perhaps it could populate the message subject with the game id and/or a link to the game itself.

I think this is a GREAT idea. There are plenty of times when I want to have a quick conversation at the end of the game, even if it's just to say 'well done' or 'gee I was lucky' or whatever.

Of course I can already do that, but a quick link like this would be brilliant.