> natural language processing is like one > of the hardest problems that's left to crack You don't need to "crack it" or come anywhere remotely near to a

> natural language processing is like one > of the hardest problems that's left to crack You don't need to "crack it" or come anywhere remotely near to a perfect solution. False positives are okay, providing you accept that some percent of your users won't tolerate the errors, and will leave your platform. And we're talking about social networks. So there's a wealth of additional information (ie: who you follow. previous behavior. who has reported you. account age) beyond plain text to augment this. And there's the setting of policy (eg: how come I can post within an hour of signing up on most social networks?). The point is, what we have now on most social networks is not geared toward long-term customer satisfaction or the public good. It's geared toward medium-term account retention at any cost - regardless of whether the accounts are bots, sock puppets, or trolls.