As a public service announcement, I just wanted to help everyone who is looking for GrandCentral invites just like I was when I posted here a couple of days ago.
Go to
Invite Share - Everyone is invited! and do the short registration. After registering, go to the "search for invites" box and type in "grandcentral". Add your name to the waiting list and wait for someone to send you and invite.
However, and this is important, after you receive your invite make sure to invite at least two other people on the list to pay penitence to Mother Karma and keep that website going. I received mine within 36 hours. Have Fun!