Group.ly
Since Ning decided to charge for its services and to cancel all of its free accounts last year, many businesses grew up taking a sweet niche of free hosting.
Grouply logo
One of the most successful kids on the block is Grouply, allowing everyone to connect with a world of people who share their interests and passions.
Now, Group.ly is being developed by PhpFox promissing to be an up-and-coming instant service, which will give you the ability to setup a custom social network within a matter of minutes.
Get ready for more jingly projects indeed.
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Short link: http://name.ly/~6HVL$9b
not only *ly.com are popular, but also *ly.me:
for instant: http://writely.me