I'm currently interning for a sales company who are hoping to launch a new website, similiar to careerbuilder or monster, and it's my job to get traffic to the site. Spending money for advertising is not really any option, unless it is just completely fantastic and cheap. How can get the best of SEO on a tight budget? Any advice would be great!

Submit your site page to stumbleupon.com, and you will get lots of traffic.