On the other hand, free traffic can be difficult to come by. Search engine traffic begins with good keyword research, but once you have found your target keywords, the work really begins. Search engines use a large number of factors to determine which sites get ranked highest in their results, but nothing seems to be as important as gettig high quality backlinks.
And, in my opinion, using LinkWheels is the best free strategy for getting high quality backlinks to your website pages. This is the example of linkwheels.

From this image, you will see black arrows that flowing in the same direction. What are these arrows? These arrow mean bot's direction. You need bots to visit your site to get anything update and be indexed in search engine but they rarely come to your website if you have low or none of traffic but these can help.
Linkwheels will loop the bots flowing and force them to visit your site again and again. How to do this is just making an article then link one to your website and another link to the next article. Make something flowing like the image said above.
Where should I start to make linkwheels?
Now, you understand concept and need the list of free blog. Yeah, let's start with high PR and free blog such as Blogger, Wordpress, Xanga, Vox, MySpace, Weebly, LiveJournal, Tripod. Whenever you have use all of them then you need more free blog. Do you know? You can find all Wordpress blog service in Google! Try to Google this.
inurl:”wp-signup.php”
You will see all result of Wordpress sign up page. Now, you can have more of them. If you are lazy to do so then you can make your own blog with Wordpress and continue your linkwheels project but this will cost you a lot per month. By the way, all of your linkwheels machine have to have Class C IP address.
What is Class C IP address?
All websites/blogs have IP address even your PC. They will be something like this 111.222.333.444. For this example, 111 is class A, 222 is class B, 333 is class C, 444 is class D. We need difference class C IP for making linkwheels because bots will think all of them are not the same server and do not know each other. This is the most effective.
How to check IP adress?
Ok, now you know that and need to check their IP address. Let's go to the domain tool and use whois look up to find them. You can also see PR and traffic. So, use the better blog first. They will help a lot in search engine. Please remember that if you want to be in the 1st page result among HUGE indexed websites then you have to make the HUGE linkwheels to fight them.