I asked this question once and got my head virtually bitten off for asking it, admittedly, I had phrased it badly and wasn't in a position to defend myself. I think some of isn't so much laziness as maybe not knowing how to use a search engine properly. But we don't know how many people who are simply lurking around checking out questions, how many people feel part of the community and that they're safe asking what appears to be an obvious or stupid question. For some questions, as you know yourself there are just so many pages thrown up by web pages that it's just nice to take the 'lazy' route and see if other people have reliable sources of information that can be used.