Is anyone getting captcha requests from Google during regular web browsing. I do tons of research online so I am pretty fast at it. I am also getting captcha requests sometimes. Is this because my machine has been flagged for bot activity and now G is sensitive to me or is it because they have really lowered the threshold for what looks like bot activity. I use proxies for all my bot activity. KW research, SERP queries, etc Do they know the number of threads (if that is what it is) coming out of a machine? Can that trigger this sort of thing? It is kind of a dumb a*s question but I would like to know. Or at least formulate a working theory. I read a few authority sites comments on this and it was straight from Google mouth, so I question its credibility. My computer scans don't show any malware or other things. On the other hand, I only turn off my machine for updates so it would make a great slave to someone who knew how to avoid a malware scan. I also use Private Internet Access (vpn) when downloading. Oddly enough, I cannot recall a time when I have been asked for captcha when that was on. Maybe I am flagged, or does Google not really know all this stuff. ... Would having several (sometimes 15 or 20, occassionally more) tabs in Firefox, each going to a different website, contribute to this? When I research a new topic to write about for my site I like to know what the competition is saying so I can say it better, or at least try to.