1. Article writing and press releases
Submit articles and press releases related to your website and include a link to your website in the resource box at the bottom of your article. http://ezinearticles.com is one of the best place to submit due to the shear volume of traffic as well as google pagerank. Below are other places where you can submit articles with your link in it. Aside from these there are still others if you want more just search for it http://google.com or any other favorite search engine you have.

http://www.devshed.com
http://www.addme.com
http://www.findarticles.com
http://www.webpronews.com
http://www.promotionworld.com
http://www.coollist.com
http://www.suite101.com
http://www.theallineed.com
http://www.articlecity.com
http://www.listuniverse.com

2. Link exchanges and link directories
Exchange links with webmasters who have sites related to the topic of your website. Search for link directories where you can submit your URL for free.

3. Traffic exchanges
The idea of traffic exchanges is that you visit other sites in return for people visiting your site. Traffic Swarm is an example of a traffic exchange. Another example is hits2u. It works the same. You have to visit other sites so your site will be viewed by others too.

4. Blogging
Search engines tend to like blogs because of the quality content. Setup a blog related to the topic of your website and post valuable content on a regular basis. Use pinging and tagging to increase your traffic. To know more about blogging visit this forum post here.

5. Forum Posting
Post to related forums with a signature that includes a link to your website. There are many out there. If you want to find some, just search on Google for any keyword related to your site + forum. An example of a forum can be viewed here. Just register and post topics in the appropriate folder. In my previous post I have also made some sample forums on where you can post your opportunities. Check out for it.

6. Social Networking
These are sites like Directmatches , AdLandPro, Ryze.com, MySpace and facebook.com. Find people with related interests. Make friends and invite people to your site. Post your link to your website on your profile and start getting traffic from it.

7. Email Signature
Put a signature in your email that includes a link to your website.

8. Word of Mouth
Tell everyone you know about your website, like friends and family.