Twitter is filled with messages: "@wave_info Requested my Google Wave Invite! Get yours now at hxxp://tinyurl.com/free-gwave - #googlewave #googlewaveinvite"

This is most likely a scam because not only is their Twitter account suspended, no one has that many invites to give out.

In my testing, while I didn't receive any spam from them (this may change in the future), there is no invite either. "