Commenting can consider as spam. Social links are limited in power. Best to improve the site itself, to give the visitor additional value.
SMO is a very effective technique to drive visitors' traffic to your website. Utilize the benefits of SMO along with other Off Page Optimization methods such as Social Bookmarking, Article Syndication etc. Bilal Tengree SEO Expert
SEO copywriting that has a valuable content for your readers can do. Another is QUALITY backlinks. You can also try online directories. Submitting press release can greatly help.
What a dumb question. You can ask a friend to view your site, and increase traffic. There are TONS of ways to increase traffic that don't involve social bookmarking.
There are many more way's to get good traffic and backlinks so try that...only bookmarking is not the way to get traffic... Directory submission, forum posting, commenting, web 2.0, guest blogging etc..
go for blog posting and get good ranks for a multiple numbers of keywords for different search engines. Hadriksoft is a good name to consult.