We were just speaking of how Wetpaint differs from Ning yesterday at coffee. It seems WebJam (a Ning competitor) just nudged itself a little closer to Wetpaint.

Quoted: Webjam, a platform that allows users to build customizable services on the Web, including publications, social networks, and various flavors in between, has unveiled a new layer directed at brand managers, called Branded Services.

WetPaint vs. Ning on Techcrunch.

Quoted: The product isn’t just about wikis - they also have social features (profiles, friends, etc.), and added things like forums and, more recently, photo uploads, over time. In many ways they are more like Ning, which allows users to create social networks easily, than other pure wiki sites like Wikia.

Quoted: This is as much a philosophical difference as is it a difference of features. On Ning, your social network is yours. Your choice of features. Your content. Your decisions. We want you to create the exact right social network for you. It's not about us. It's about you.

KickApps is another white-label social networking service.

Quoted: KickApps has continued to grow in the face of strong competition from high profile startups such as Ning.

Marc Andreessen on the Facebook API.

Quoted: To start, my personal opinion is that the new Facebook Platform is a dramatic leap forward for the Internet industry.

Another build your own social network site like Ning. Haven't tried it.

Quoted: Crowdvine is a hosted free white label social network application created by Tony Stubblebine. Setting your own network is dead simple.

Quoted: List of “White Label” (Applications you can Rebrand) Social Networking Platforms