All of them use the search engine, in one form or another, for navigation and discovery.
These are artists who ask questions of the web. They interpret online culture by driving through it like a found landscape, negotiating vast piles of existing material. So we could say that these are artists who work as archivists, or artists who work with new kinds of archives. Or perhaps these are simply artists who work with an archivist's sensibility — an approach that uses the dynamic, temporal database as a platform for gleaning narrative.