Cision has tossed its measurement hat into the influencer ring (?) with the launch of Cision Influence Rating, which uses more than 40 different measures — Facebook “likes,” inbound links, and voting activity, for instance — to determine who the influencers are.

Also, the company has launched the Cision Influencer Database, which includes thousands of online and traditional media muckety-mucks with details about their “social persona.” The database is free for clients through a three-month trial period.

This is becoming a very crowded space these days. Weren’t we told to resist the influence of peer pressure when we were kids?

Anyhoo, which of these influencer measurement services do you recommend? The comments section and @PRNewser is open for comment.