Question

When we find in search engines, the text we typed is seen in result list with some links as it is. But the matter is, when we go to those sites, the same text is also there, but saying ‘not found’.(For example, lets say, we type ‘best software to doSomeThing’ in google, the search results shows results including what we typed. When we go to some links listed in search results, those sites also have the same text ‘best software to doSomeThing-Not found or saying what ever..’ the amazing thing is, some sites is not relevant to what we find. that means if we find a software, some sites on tourism,drugs also says about our software)

I want to know how those sites catch what the search engines finds or what we type in search engines?
Is it something done with Javascript or any other methodology?

Answer 1

You can check the HTTP_REFERER and parse the query string looking for q=