Please review my startup - rinnku.com

Could you please review my new startup - http://www.rinnku.com

Its a bookmarking site with community sourced news. (Digg + Delicious - if you like comparisons to other sites).

However unlike other bookmarking sites, your bookmarks are posted as private by default - so it's social but at the same time protects your privacy.

I'd really love any feedback or advice you can give me.