After you've sorted out your keywords another major step in SEO is cultivating back links. Nothing gets you noticed faster by search engines than external links to your site from a few heavy weights. You know the ones I mean, those with a high page rank and zillions of eyeballs.
But how do you know who links to your site?

Back links are, by their very nature, outside of the control of your site. There are many different techniques to acquiring them (a topic that is outside the scope of this short article) ranging from social engineering & mutual cooperation to dropping a load of cash. Of course, if your content is good then people will genuinely dig it, blog it and link to it without asking you. This is all good for you, but how do you find who they are?

Most of the major search engines have a tool buried somewhere in their site to find who links to you. However, here is a great tool that queries multiple search engines and.. it's free. Who links to me? www.wholinkstome.com
Just type in your URL and you get a summary of the results. The individual search engine results are just a click away. This is a great tool just as it is but to top it off you also get the Google Page Rank.

The question "Who links to me?" will remain a secret no longer!

"Who links to my site?" by tobyonline