How to score an Ingress invite

Android users everywhere are all talking about Ingress. It's a cool location based MMO sci-fi game where you secure portals to help alter the course of human history. The back story is all at the Niantic Project website, and it's quite the puzzle itself to get it all sorted. The short version -- it's fun, it gets you exploring, and it's addictive. It's also invite-only for now, and that's always a bummer. There's a couple ways to get an invite. The first way is to sign up for one at the In...