A Computerworld reporter has been receiving requests from colleagues and total strangers who want an invitation to join the new social network.

"I think Google is playing the 'exclusive club' card very well with Google+," Olds said. "It's really helped them create some buzz around it."

More buzz went up this week when an unofficial study was posted claiming that Google+ has already grabbed 10 million users.

Google has not released any statistics about the number of people who have joined Google+. The company has remained tightlipped about everything from the number of users to bugs that Google engineers might be finding in the system, or about any upcoming changes.

But that's not stopping people from conjecturing about it. It didn't stop at least one person from spending quite a bit of time trying to calculate his own numbers. Paul Allen, the founder of Ancestry.com and not the co-founder, has been receiving a lot of attention on Google+ for his estimate that Google+ has already gained about 10 million users.