Oh you're specifically referring to services google offers. Though before recapthas, I ran into the same problem with their ordinary capthas, since they declared you're a bot for using involved search switches, which for me was near every time, since most of my searches were looking for in depth information, specific, and not broad grasping. Way back then I had a way around it, by banning (deny) the specific domain google used and refreshing each search instance to run google searches, worked for a while but pretty soon their results were so sub par I moved to other search engines.