I am a long time lurker on this great site, but when I saw the starter message on this post I was immediately aroused to indignation - How the **** could I, as a first time poster, ask for help?. Send five (or n) stupid, time wasting questions? Not very user-friendly, not in the general ethos of the Geek!!!
Then I read the reason for this "alarming" suggestion - perfectly reasonable, even highly desirable.
But how to implement it??? How about a "prove you're human" box, when at least a real email address could be subsequently blocked if necessary. No doubt 99.9% of readers of this site are genuine would-be geeks or at least value geeks for their knowledge, helpfulness, and tolerance of newbies like me. So, Mr. Geek please bear this in mind when you spend more of your valuable time and intellect contemplating this matter!