Whatever has a beginning has an end, and this site came to an end on January 2016.
skinju.com provided several add-ons, extensions, and plugins for open source packages including WordPress, elgg, and the Yii framework.
Those extensions included one of the very early twitter feed import plugins for WordPress used by many to create mini-sites to archive own tweets.
Furthermore, the toolset included an elgg extension to create a private network accessible by members only, used heavily by elgg implementations targeting children communities.
You may be interested to visit the author homepage at KhaledAfiouni.com