Common Name: NetModular
Niche: SaaS - social Networking for Business
What they say about themselves: "Netmodular sites are not part of some amateur Network, we create beautiful and effective Social Networks that delight users and enhance your brand." -Jesse Tayler, CEO, Netmodular Community"
What I say about NetModular: At $9500 for setup and $10k a year, NetModular is aiming to shake a few bucks from the corporate blog wanna be's -- as Frank Zappa would say, "strictly commercial"... although I think Frank would have hired someone else if he was around for Web 2.0.

www.netmodular.com
Common Name: Hyves
Niche: Holland's #1 Social Networkng Website
Slogan: Always in touch with your friends.
What they say about themselves: "Holland's most popular website, with over 7 million members and over 2 billion pageviews per month."
What I say about Hyves.net: Well, I'm not from Holland, but the members look like they are having fun. Active user pages with lots of "friending". Videos are their own, (not YouTube). Site has a multi-lingual interface, (mostly european laguages). Main features are personal pages, videos, photos and connections to schools / classmates. The namesake "Hyves" are topical interest groups, for example their World Soccer Hyve with over 350,000 members!

www.hyves.net