> I simply checked how long time it took for reading my article, writing and submitting a comment. Less than 10 seconds = block with a friendly message Some of

> I simply checked how long time it took for reading my article, writing and submitting a comment. Less than 10 seconds = block with a friendly message Some of the bots simulate mouse movements, some of them even inject letters/words into textarea elements as if someone is typing. It's not that hard to make it look like someone is correcting typos.