Book marks are basically helpful for indexing and staying indexed. They have minimal SEO affect unless you bombard them across 100s of accounts at once.
Yes, some social bookmarking links will help in SEO, but not all. Stumbleupon and del.ico.us is using the nofollow tags and most probably so are alot of the others to help prevent spamming.
This pretty much sums it up. Ignore all other posts!! It might help bring the link to Google's attention, thus getting you indexed, but there are of course other ways to do this. If your link is reallly awesome it might get you a surge of traffic, but that is rare. It won't hurt, unless you're spamming, but don't waste too much time on it hoping for magic.
Yes, some social bookmarking links will help in SEO, but not all. Stumbleupon and del.ico.us is using the nofollow tags and most probably so are alot of the others to help prevent spamming.Social bookmarking will help you to provide the traffic to your site as well as get ranking to your keywords.
Along with the new googles spam filter, it might have a negative effect on rankings when mentioned search engine decides that the effort for pushing backlinks is spammy. Aparently google can among all check social sites thoroughly. As i read all round, social bookmarking kinda lost its weight. If not seen as natural by google that is.
social bookmarking having more value then other type of link building process. Through this we can add our all the pages of site. It is very help full to improve your visibility on Internet and driving huge traffic on your site.
am not sure how much link juice it has... but it realy helps if you do your strategy well.. I made a list of 30 top social bookmarking sites... and got my blog posted 30-50 times in each site.. for a 3 variations of a keyword... it helped..
do follow bookmarking could give you nice backlinks while on the other hand the nofollow blogs are also good for driving traffic.