[Sohcahtoa82]

> With a VPN, nothing usually works until [...]

Bots are very likely to use VPNs, so captcha services make things a real pain in the ass for anyone connecting from a VPN.

It's the same story with Tor. Coming from a VPN/Tor is a strong signal that you're more likely to be a malicious user.

[freedomben]

I'm guessing they also use failed CAPTCHA statistics as more "proof" that those users are malicious. How much should we bet that each time I fail a CAPTCHA because it's utter shit, and happen to be on a VPN, somebody somewhere counts it as a "blocked bot" or "blocked attack"? I guess I don't want to know as it will probably make me angry.