How to do seo of bookmarking site?

Make your title catchy and interesting to click... include your kw to you title and make your description easy to understand and descriptive...

Submit your site in the Good Social Bookmarking site List.

Try to post your bookmarking site in forum sites.. You can promote your sites as well..

your title should be interesting and quality content

1. To keep it really simple what you want to do is to target a specific keyword phrase in the article you write. You increase the odds of ranking higher on the search engines if you target long tail keyword phrases which are phrases of three or more words.
2. The easy way to set this up is to include your keyword phrase in the title of your blog article. You should then also include it in the first and last paragraphs of the article when you publish it.
3. To place additional emphasis on it you can bold or even underline that keyword phrase. This helps the search engines know exactly what your blog article is about.
4. When you go to bookmark the article you want to tag it around that keyword phrase. You should include those again in the title and in the description for additional emphasis.

Originally Posted by kevinkarl

Submit your site in the Good Social Bookmarking site List.

this is a good idea.you can try it

Social Bookmarking itself has many different approaches. You should however be careful not to exaggerate it and be considered a spammer. It can also result in your being banned from the site. The key is to follow proper ethics and uprightness when you socially bookmark your site.

Not only submit your site into bookmark sites, but also be active in the bookmark sites.