So I received a invitation to get a gmail account from a fellow MR member and found that Yahoo! files the gmail invitations into your bulk mail folder. For those who don't review the bulk mail folder (like me) who think they may have received an invitation, check your bulk mail! Usually the from field is the person who invited you and the subject is "<Your Name>, <Referrer Name> has invited you to open a Google mail account" How shady is that? Its one thing to try to compete by offering more storage, but to flag gmail invites as spam seems unfair to me.