ComScore reckons Google is losing its lustre.

Apparently Facebook frenzy has topped out and is slip sliding downhill.

While investor Roger Ehrenberg worries about the lack of a strategy for monetization of audiences in social networks.

Alternatively, Scott Karp reckons the future is about customized social networking applications for business.

I'm with Scott.

One of our clients, who used to be responsible for vertical industry marketing at a large software vendor, used to comment he had yet to be introduced to anyone who described themselves as a C-level executive at an SMB. A banker, yes. A nurse, yes. An estate agent, yes.

I think an individual's strong sense of personal identity is critical in determining the cohesiveness of the community they join.

In professional markets, the narrower the niche, the deeper the ties that bind the community together.