Why am I constantly being added to quickmatch matches?

I did not consciously sign up for any of these games? Is this a bug? Or can I somehow stop being added to these games all the time?

Thanks!

Hit quickmatch then uncheck "Invite me to multi-day games". It is a bit confusing that it starts matching you for both types of games.

if you don't see the quickmatch button then swtich to unity instead of flash client and click on it

Thanks :)

So this will keep me from being invited to quickmatch games, be they multi-day or realtime?

yes