I am active social bookmarking user & i always promote my blog to social bookmarking websites like mixx, digg reddit etc. I am just doing it for linkbuilding. I found when my story hit the mixx page i get 10-12 backlinks from mixx (Different-2 categories tags etc.). I always use mixx.com to generate backlinks. I have around 2K backlinks in yahoo site explorer (almost 30% links are from mixx). My blog home page PR is 3. So should i continue this process? or should i stop this... I am not sure if these links from same website have valuable for me... What you suggest...
The one very good thing that social bookmark websites can do for your website is that they send google crawler to your website regularly ( even if the link is nofollow like in digg.com ) so that your updated content indexes much faster and your SEO work proves much more worthier and at a much faster rate. Howver the link value from these sites is temperory, but you must keep on bookmarking as you will always have some backlinks.
yes social bookmarking helps a lot to get our site or blog indexed soon. Some popular and good ranked bookmarking sites helps to get good traffic too.
The links you get from social bookmarking are not very valuable with regards to rankings but they're good for getting things indexed and some of the big ones can get you some direct traffic if the content you're sharing is good enough and the titles look appealing.
Links from SB sites may not be so valuable but then again a link is a link. It is good to know too that search engine programs simply love to crawl these pages so so it's still worth the work getting some links from these sites.