Physics Overflow is voting on whether to have ads on posts. One of the comments
Computer chess is an example of business whose hidden commercials literally flood internet. From years now, in every forum there are users constantly giving the message that the product of a certain firma is the one and best and that the main competitor is a cheap inferior substitute. Even famous Grand Masters are probably paid to insert such statements in his columns constantly and even now, after the free GNU program Stockfish 5 has proved to be the strongest one and therefore provide the best analysis of any position.
commented Jun 19 by Eduardo Guerras