
The biggest concern for every website owner is to find ways to quickly increase web traffic using search engine optimization at minimal or no cost. Part of the search engine optimization process is writing articles and blogs with links to your website and submit to the popular directories. This is all good and a must do for web promotion.
But, from personal experience, i found out that submitting blog post links to social bookmarking sites brings a decent quality traffic. Most of the sites are authoritative sites visited so often by the search engine spiders so your links will be crawled almost immediately. The high page ranking comes from the fact that you will get numerous keyword links to your website.
The biggest benefit I personally see is the quality of traffic that you get. Getting traffic should not be measured by quantity but quality. Since your bookmarks are categorized into different tags, and people will be searching within a particular tag, you are guaranteed to get visitors who are interested in your service or product. It is like doing a pay per click campaign with no or little investment.
The more sites you submit to, the better your chances to get ranked very high. But, of course, it is very time consuming to do this manually and therefore you will need to get an automated tool that do all the submission jobs for you. Fortunately, there are good tools available that will save you a lot of time. You will need though to carefully do your research in selecting the one that would not spam the sites, is not limited to only specific sites and would not submit duplicate contents.
I use Bookmarking demon tool and I like it. I recommend you check it out. It automates the bookmarking tasks and generate quality traffic.