1. pop-up window -> if the person's online himself, why use a bot then? if the bot is logged in, the person cannot play in the client and vice versa.
2. imagedecoder -> cannot read merged letters/numbers in the captcha
3. human outsourcing -> how accurate are those really? they're often from a developing country in which english isn't their primary language. And these cost $. a huge deterrent for free bot-users.



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