I just want to know is that social bookmarking like digg.com increase your page rank or not? if i will submit daily 3 or 4 articles to digg.com is that increase my page rank?
Social bookmarking site really helps to increase traffic towards your site.It is the one of the best method to get bulk traffic.Mostly users share information which are posted here and bookmarked that article or web page.
Most of the social bookmark sites have no-follow so you dont get a higher pr from it but its good for traffic
Articles that hit the mainpage of Digg usually get a decent PR. Since these are DoFollow links they might help to increase your site PR as well.