Cartoon originally posted to ReadWriteWeb.

In the words of anyone in a suspense film or TV show who’s ever broken into a computer system, “All right, I’m in.”

In this case, “in” means I have a Google+ account. The windows for creating one keep flicking open and then slamming shut; you have to leap with cat-like reflexes and then do one of those cool shoulder-roll-into-a-crouch moves when you land. (Fine, I’ll stop with the action tropes.)

Some quick impressions:

• Part of the genius of Google+ is the way it acts, not as a walled garden, but as connective tissue for services you may well be using already. (And one of its chief limitations, at least so far, is the way it doesn’t do all that much to connect whatever non-Google services you’re also using.)
• It’s not immediately clear how the +1 button interacts with your activity stream. Why is there a +1 button on my own posts? Why isn’t there one on items in Sparks?
• I love how focused it is on creating circles of friends and contacts. And it makes me think folks may want to revisit Alex’s post on using Twitter lists to keep you connected to the people who matter most before they dive into Circles.

Are you in yet? Any thoughts?