If I act on a game invite (accept or decline) have the message disappear automatically. I am so immensely popular on CC that I get 50 or so of these a day, and my inbox overflows. Then I have to go back and manually delete them. Sometimes they expire, and yet a slot in my inbox is still taken up by this. While I love the feature, the mechanics could be better.
And yeah, Owen, I DIDN"T use the form.