Google on June 28. Google+ quickly grabbed headlines, gained (and another 10 million since then) and had people seeking invitations to its field trial from total strangers.

Oh, and it's gained a lot of interest in the much-sought-after and lucrative enterprise market. to set up Google+ accounts, even though the network has asked companies and organizations to wait until a business version is ready in a few months.

"With tens of millions of users and Google behind it, Google+ has become a major player," said Rob Enderle, an analyst with the Enderle Group. "It has a good vibe going for it. The product is embracing concepts from , LinkedIn, and .... The end result is a higher average quality of information and less overall information traffic, making the service more useful for most."

All of this fanfare and success means Facebook, which had been skating along with nary a serious rival, is .

"It's been going very well for Google+," said Dan Olds, an analyst for The Gabriel Consulting Group. "I'm not sure [Google] can ask for much more at this point - although I'm sure they will."