All Google needs is a beachhead, right? For Facebook it was Harvard and then Ivy League schools. Perhaps for Google their beachhead is the Anti-Facebook people.

Once it grows a bit, people start writing apps that abstract FB and G+. Think: iPhone app with a Newsfeed feature that just seamlessly merges your FB and G+ feed.

The existence of apps like that will make it trivial for people to have a G+ profile in addition to -- even if never instead of -- their Facebook account. And then it's up to Google to grow more and more mindshare.

Maybe it'll always be an also-ran. A Facebook lil brother. But I wouldn't just write it off. We've seen this story before.