Traffic Zap

This is a very good website if you want more visitors to your site. It's totally free and easy to use. All you have to do is type in the URL of your website and your e-mail address ( that's what they ask in exchange, to send you newsletters ) and they will post your link on 20 popular search engines (or at least that's what they say ).
Well, it doesn't hurt to try it out, they practically don't ask for anything, and you don't have to visit the site on a daily basis.
Here's the link if you're interested