In order to attract a lot of traffic, you need to do the following:
First, you may want to submit your site to hundreds of search engines.
Bu I prefer you may submit your site to directories. Much better if you submit to a free directory site.
* Join to forums, you can create a signature for your site.
* Create Blog and use your keywords. You can also do blog commenting to a related site.
For lots of traffics –
Social networking (Facebook, myspace, Twitter)
if you have tricks then these threee sites can give you lots of organic traffics