Tell me your strategy.

your will try Facebook and Twitter.

I want to unique traffic on my website so facebook and twitter it's better to me..?

The problem is not how to increase the traffic but how can you make people come again and again to your site

yes you are right man......

Social bookmarking Sites creates inbound links and these links provide direct traffic.....

I don't know what's your strategy, anyhow IMO write good articles or short informative comments on those sites that are relevant to your sites/business. Hopefully you will get some good traffic.

Everybody need traffic with and without efforts to make money but most of guys fails due to lack of time investment to build backlinks and tracking their website performance.

You have to spent some time for getting back links.You have to go for some link building tactics like article submission,Press release,social bookmarking and networking,do follow blog commenting.And ofcourse update contents of your site regularly.

In order to get more traffic to your website, make sure to create and maintain a good online presence. This the most crucial aspect as with good search engine rankings the visibility of the website increases and thereby more traffic comes to the website.