yes, large proxy networks are potential solutions. but they cost money, and you are playing a cat and mouse game with turing tests, and some sites require a log

yes, large proxy networks are potential solutions. but they cost money, and you are playing a cat and mouse game with turing tests, and some sites require a login. furthermore, people have tried to use these to spider linkedin (sometimes creating fake accounts to login) only to be sued by microsoft who swings the CFAA at them. so you start off with an intellectual desire to make a nice search engine and end up getting sidetracked into this pit of muck and having microsoft try to put you in jail. and, no, i'm not the one microsoft was suing.