Here's two simple ways links could have happened: - someone having the domain before you - script kiddies machine-generating links to pages on random domains

Here's two simple ways links could have happened: - someone having the domain before you - script kiddies machine-generating links to pages on random domains so Google finds exploitable targets for them Google is not randomly looking for pages - that's brute-forcing a site map and it's utterly, impossibly inefficient even to supplement what they find crawling around.