no it's just for your traffic not for Pr yes if they are do-follow then maybe you have some help to get PR
SEO professional use the social bookmarking submission for increase the visitor traffic in your website. It also provide the little backlink for any website.
The best technique is to submit your link high page ranked websites with do follow tag and in a limit , not be a spammer
Social book marking sites will help you to increase site traffic and not to increase your site pr. If you want to increase site pr then do link exchange, directory submission, articles and other off page method.
I have been using bookmarking and i can't say it's successful at all. The reason i think is to only get publicity to your website.
If you do social bookmarking and only one other method (like article marketing) you should easily be able to get a PR1 or PR2 I know this from personal experience. Although it probably requires at least 25 bookmarks to the page your trying to accomplish this on.
hmm...i use plugin on my WP site, but try onlywire dot com. You can manage all the bookmarking sites there.
You can increase the visitors traffic in your website by SMO (Social Media Optimization). For increase the page rank, you have to do quality 2 way or 3 way link exchange with same themes. Keep it up.
Social Bookmarking is the best way to get backlinks and traffic too backlinks + Traffic = High PR. Is that simple
Social Bookmarking is little helpful in to improve PR; But Social Bookmarking is very useful in improve targeted visitors on your site.
Do you think we can bookmark a French website in an english bookmarking website ? Will it be effective ?
The work you do in social sites is all the way help full in any way, since google consider more that 100's of factor to provide page rank or displaying in first position. The thing you should concentrate is you should not spam the entire system with a useless work .
Only if the links are followed will it help the overall authority of your website however not many are and even when they are you cannot get decent anchor text. Social Bookmarking is overrated both in terms of traffic and rankings.