Google+ invites.

[JustAndy]

https://profiles.google.com/u/0/109149518279970400934

 

[psychofox]

https://profiles.google.com/u/0/109115376254172099216

Here is mine

 

[BlueDan]

I just tried posting a link to my Google+ invite page (see signature) on Facebook, twice, and it kept being auto deleted.