couple way to promote your website.

1- social bookmarking site-like
http://www.digg.com
http://www.stumbleupon.com
http://www.reddit.com
http://www.del.icio.us
http://www.mixx.com
http://www.fark.com
http://www.twine.com
http://www.dzone.com
http://www.twitter.com
http://www.faves.com

2- try free classified sites-like
http://www.craigslist.org
http://www.backpage.com
http://www.olx.com
http://www.webcosmo.com
http://www.beatyourprice.com
http://www.epage.com
http://www.oodle.com
http://www.kijiji.com

3- try couple forums-like
http://www.digitalpoint.com
http://www.v7n.com
http://www.seo.com

4- local site-like
http://www.google.com local
http://www.yahoo.com local
http://www.bing.com local
http://www.local.com
http://www.yellowpages.com
http://www.yelp.com
http://www.topix.com

This is very important. I dont know if you offer service or products. let say if you sell books. try to get some links from books website or even exchange link. try to find the nich that your website offers. you can goto google again let’s say you sell books and search for books website like forums, directories, classifieds, and etc.

Hope this helped
and good luck with yor website. Ans one more thing content on your website, that’s realy importnat too.