A UFO landed in everyone’s yard this week: a social web-thing with Circles, Hangouts, Sparks and Huddles. It’s like Facebook, but not like Facebook.

Though invites aren’t openly available yet, Google+ (or GooglePlus, if you prefer to write it out) got a great reception this week. Dan Gillmor gave it a B+; the Journal seems to like it.

Together (and perhaps a special guest), let’s discuss:

• What is Google+? How does it fit in the platform firmament?
• How are users finding it useful so far? Please check in.
• Where would you take G+ if you were Google?