Wordpress Auto Social Bookmarking

I know there is a plug in that will post to social networks after you upload a post to your wordpress blog, but I want to know if there is a similar plug in that will just randomly go through all existing posts and book mark them on a schedule, like 10 a day or something.

also looking for it. pm me if u fount it pls

I don't have this SocialBacklinker (search google for it) but it seems to have the features you are looking for.