server hosting provider to server settings so uneven in quality, also all kinds of. For example, the default settings of the server is banned some search engines all web server in the server; some on the 404 page (Not found, does not exist on the server), will head the 200 status code is returned, which leads to the search engine has a large number of false copy the contents of this website, from punish.
so when choosing a server, weights, etc. prior to the observation included with IP other websites. Or there may be collateral damage . Remember the gates of fire affecting the fish, he said.