http://www.stribe.com/
Create, publish and manage easily your community on your website. Get your own social network in a very short time.
http://www.tumblr.com/
Tumblr is your friendly, free, and terrifically easy tool for creating tumblelogs.
http://www.socialgo.com/
SocialGO lets you easily create and run a feature-filled social networking website. You choose who can join, what they can do and how it looks. The best part is it's free to get going.
http://www.koornk.com/
koornk is your personal shouting place that lets you stay in touch with your friends via short, quick messages. It works the other way too. And all you have to do is tell your friends (and the world) what are you doing at the moment.
http://rstat.us/
Microblogging has taken the world by storm. Millions of people around the world now share their thoughts with friends, family, and random strangers every day. Links are shared, stories are told, and events are discussed. rstatus is the newest place to participate in the collective conscious of the planet.
http://frid.ge/
Fridge enables anyone to instantly create simple and private social networks to share photos, messages, and events with friends and groups.
http://www.toonti.com/
Toonti is a platform that allows you to create your own custom social network. An innovative WYSIWYG Design Wizard and Design Tools make it simple for anyone to design their site. In addition, it has a rich set of tightly integrated features and it supports various privacy options.
http://www.google.com/buzz
Start conversations about the things you find interesting. Share updates, photos, videos and more with your friends.
www.sixent.com/
Sixent makes it easy for people to share their lives online the way they want by giving users the ability to create multiple profiles to show different sides of themselves to different people. These profiles are tied to pages, groups and content (like blog posts, photos and videos) that users can selectively share with their diverse contact network.
www.life2front.com/
The LiFE2Front network hosts experiments to promote user's life, relationship, activities, and personal content such as blogs, photos, videos, podcasts, bookmarks, or wishlists.
http://en.netlog.com/
On Netlog, you can create your own account with pictures, blogs, a guestbook, and much more. You can find people from your area, expand your friends network, or find people having the same interests as you.
http://www.livejournal.com/
LiveJournal is an online journal service with an emphasis on user interaction. A basic, fully-functional account is free, while paid accounts receive access to premium features. You can use LiveJournal in many ways: a private journal, a blog, a discussion forum or a social network.