Social Media analysis space dissected

I was told by a colleague about this very comprehensive summary of the Social Media analysis space, which was recently released by Apex, N.C.-based Social Target LLC. The company is run by Nathan Gilliatt who has a blog over at http://net-savvy.com/executive/

Dow Jones (vis a vis Factiva Insight) is covered along with 30 other companies. The report (which isn't free, btw) provides analysis of the social media space, comparing and contrasting them. Here's the list of companies included:

Attentio
Biz360
BrandIntel
BurrellesLuce
BuzzLogic
CIC
Collective Intellect
ComMetric
Converseon
CoreX Technologies
CustomScoop
CyberAlert
Digital Influence Group
Dow Jones (Factiva)
Ethority/Buzzcentric
Integrasco
Kaava
Market Sentinel
Millward Brown Precis
MotiveQuest
NetMap Analytics
New Media Strategies
Nielsen BuzzMetrics
Onalytica
Radian6
RTGI
Scanblog
TNS Media Intelligence/Cymfony
Umbria
Visible Technologies
Waggener Edstrom

This gives a good sense of how active this sector is. There's a lot of interest among large companies to measure their footprint on the Web and this list shows there is no shortage of companies stepping up to the plate. Many of them are very small (and therefore out of necessity, specialized) though, and only a few offer comprehensive features and even a smaller number offer comprehensive content to go with them.