Seems like a natural progression to me...for ad revenue.
I saw maybe one or two Bot Threads on the site during the first 9 months I was here, then they implemented Captcha to combat the, er, "threat" (I frequent the Gaming, News Room, and Off Topic almost exclusively, was botting really that bad elsewhere?).
But now we have annoying spot-advertisements strapped to them, which creates a consistency THAT DEFEATS THE PURPOSE OF HAVING CAPTCHAS IN THE FIRST PLACE.
I must ask, what is the point in creating a random Honey-Pot for automated scripts when you remove the random part of the Honey-Pot? A botter could watch all the adverts, get the requisite list of catch-phrases for each, parse them and bypass the Captcha entirely.
It's hard for me to not be jaded about this, because from my perspective, it appears that they implemented an anti-bot system to fight a bot threat that didn't really exist so that they could lull users into using it and then drop more ads via the new anti-bot system.