On ICC (internet chess club) you can register for free if you are the inventor of the engine, but if you have bought it (as you wrote) i don't think there is such a place... you can use it in correspondence chess game (where using engine is allowed... not here!!), but there is no fun if someone plays for you, there is?
sorry for bad english :)
Where can my engine i bought play against other engines.Is there such site.I know playchess.com can but they want me to pay to play.So is there a site where i just load my engine and book and book and play other computers?