Joanna says:

Really depends on the market you are targeting. The quickest way to get instant web traffic is via a traffic broker. You can go through ppc like adwords, bling, yahoo - but you can spend a lot of money in a hurry.

A traffic broker uses re-directs and can target your market. The good news - very inexpensive as in pennies per hit. The bad, is since it uses redirects the end user is going to be taken somewhere other than where they thought they were going.. If you have an effective page that grabs their attention you will get hits and sales. If not, then you will not. I know a lot of affiliate marketing folks use this method to test offers.. If you can grab peoples attention in a few seconds than you probably have a great ad.

Another note, people can use traffic brokers like this to dump a ton of traffic to a site, pump up the unique hits and alexa rating - then sell the site..
References :
http://www.besttrafficstore.com

Warrior Special O says:

You can get more traffic to your web site by writing articles
about the subject the people who you want to visit your site
are interested in reading about.

This means if you are selling a product related to "x", then
you would write articles about "x" and submit them to article
directories for publication, post in forums about it,
comment on blogs and other relevant discussion communities
such as the social networks twitter and facebook leaving
a link to your webpage in your signature and/or profile.

What this does for you to get you more traffic to your webpage
is give your readers some good information to build up trust with
you and then provides them the opportunity
to check out your source box to get more
resources and info from you about what
they want.
References :
http://ezinearticles.com/?How-to-Get-More-Traffic-to-My-Website-Revealed&id=2583199

http://TopTrafficForum.com

http://IncreaseYourOnlineTraffic.com