just like the topic said is google okay with social bookmarking site? is social bookmarking any value for backlinks? what are good bookmarking site?
They are fine with them. Why wouldn't they? But, the link depends on the account. If the account has a high PR it the link is worth more.
The problem with some social bookmarking sites is that they are no follow. This means that they won't help your pr. But they will be good for traffic
I agree with Zurpit, especially if you're struggling with a particular key phrase. Plus the pages get indexed really quickly by Google.
Google is fine with Social Bookmark sites. Google gives importance to every bookmarked page on Social Bookmarking website
Google give importance to the bookmarking sites backlink. Digg, stumble this two are very famous. For more site just search into the google with keyword "socialbookmarking list".
Several social bookmarking sites are nofollow. But there is a good number which are dofollow, such as digg, mr wong, etc. If you submit your content to these sites, the traffic will be amazing as well as search engine positioning. Also it is a great way to get your site's new pages indexed far faster.
Google hold the big Social Bookmarking websites in high regard and index them every few hours, maybe even more then that. Problem is, there are alot of people trying to start SB sites so you have more competition now. Goodluck