Social Media is a great way to get free traffic coming to your website. Not only do you get free traffic from the social media sites, but the free traffic coming from the search engines will also increase. This is because a lot of these social media links will count as quality back links. The more back links you have pointing to your website the higher you will rank in the search engines.
Now this does not mean that you should go and just spam the social media sites with your links. This method will never work because people will see you as nothing more than just a spammer. So the key is to develop relationships with people.
Think of Social Media as an actual social event, where you can go and hang out with other people to develop relationships. The more relationships you create, and the more you communicate with them, the popular you will become.
Social media is all about sharing; you share your own content, plus when you come across a website that you like, you share that as well. This way you can add all your content without being spammy, because the other content will naturally balance it out.
If you are looking for some free traffic and are willing to invest a little of your time, then you owe it to yourself to check out StumbleUpon. This is a social bookmarking site where you can add all your webpages for other users to stumble through.
This website is different than other bookmarking sites because users cannot see what website they will stumble upon next. They simply hit the stumble button, and StumbleUpon takes them to the next website.
If you have a commercial website you cannot add it to StumbleUpon unless you become an advertiser. But if you have a personal website where you are sharing your information freely with the audience you can submit as many sites as you like, as long as you don't submit too many URLs from one domain at once, or, without adding URLs from other domains.
How To Use StumbleUpon