How to distinguish robots from normal user?
How does SO do this job?
Currently I’m met with a robot which post once every 1 hour…
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How to distinguish robots from normal user?
How does SO do this job?
Currently I’m met with a robot which post once every 1 hour…
Try akismet as your first line of defense. Bad Behaviour is efficient too, perhaps too efficient, as i had issues with false positives. Akismet on the other hand serves me well. Then, if necessary, add other layers not impeding on the user experience, (like using empty fields that should remain empty) and then if you really have to, other techniques involving turing test of some sorts (captcha being the worst in terms of user friendliness: try simple questions instead). Here is a good read.