Which is the best and easy way to drive more traffic to my site?

[Rudy Bauer]

Actually there are lot of option to drive the traffic:
If you have some budget, you can use pay per click like google adwords. But please learn, because the wrong strategy will eat your money.
Free advertising can use article by send them to article directories like ezinearticles.com
Blog is a very good media to gather traffic to your site.
Web 2.0 like myspace, youtube, facebook is a very attractive media to attract traffic
Advertising like usfreeads
Search engine optimization by design web and link to another popular website
Every strategy has advantages and disadvantages. You don't have to use them all. Mastering one strategy is enough to make you money.

[Jhanvi]

I agree with you. Social media optimization is the best way to boost up traffic quickly.