This will make no difference whatsoever.



But I saw it on the front page Hacker News, so therefore it must be revolutionary.
 
Why wont it? Ive used systems in that past that have hidden fields on forms, that bots fill in then it submits to no mans land. Found it actually better then a captcha.
 
I think it will be beneficial. Will it stop all bot submits? No. Will it stop a large portion? Probably Yes.