Computer chess sighting

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Physics Overflow is voting on whether to have ads on posts. One of the comments was:

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