Now everyone can register already. I've just signed up for 2 accounts. It's similar to facebook, except you can group the people into different circles. Near! I love it!
Now Google+ is available for everyone. Just create your google account or login to google+ with your old gmail address.
If you have gmail account which is very much older i think you will get approval quickly.I had applied for this with my 3years old gmail account and i got instant approval.
I will have to give it a try then with an old gmail account and see what happens. Hope that it is not an epic fail. lol.
I bought a Google+ invitation off eBay for .99 cents two weeks ago. There's tons of them on there and some go to charity. It was worth it and I love the "circles" feature!
In case you have tried the gmail option and still not able to sign up, here is my plus link https://plus.google.com/_/notifications/ngemlink?path=/?gpinv=cvJsf4gksw0:o37du7COqTk Feel free, first 132 only Enjoy