How search engine check relevancy?

[robwilley7]

I have little idea about the relevancy checked by search engines..so, i need your view regarding relevancy algorithm of search engine..i have also got the suggestion by one of my friends that some search engines avoid Keywords Density.because it is consider as the spam.

so, please give me our clear views regarding relevancy, LSI & Keywords density..

[demianfleming]

Well there is not any guessing or exact idea to any one of it we just has to done our best following the related search engines rules and norms and how to check the relevance of Google's site is not officially open, because what is real for any algorithms of Google it is may be not known to us.

[mesasa]

In my opinion relevancy is overrated when it comes to SEO. Sure it helps and if you can get it go for it, but I have ranked lots of sites getting links from random articles, profile links etc that have nothing to do with my keywords. Just focus on getting your keyword you in you anchor text. That's what Google wants to see.