I can kind of see why it's a toilet... I feel a mindless rant trying to claw its way out, I'll try to keep it short.
Ok, the whole reason it's filled with trolls in the first place, likely, is because the questions are usually asked by, well, people who are ignorant as to how search engines work. If they wanted a good answer to their question, they'd spend a lot less time just typing it in to google or other comparable engine and seeing what pops up, using their noodle to filter everything but what appears relevant to their query, and doing a little bit of research. Instead, they go to a place like Yahoo answers and open themselves up to trolling and misinformation, asking stupid questions which they could answer for themselves if they simply didn't fail the internet. What am I? Your stupid search monkey? When you say "dance" I dance? But, no matter.
Example of a stupid question I have seen?
Q: Why does pot stay in your system for so long compared to other drugs?
A: Because it's fat soluble, douchepickle. Other drugs are water soluble.
When I don't answer right off the top of my head with something out of left field, it usually takes me seconds to find the crucial information they are seeking, at which point I shake my head with shame at what humanity has become. Perhaps after I complete (or fail, with terrible consequences) my experiment with getting them all to play nice, I'll move on to teaching them to use the tools at their disposal, rendering yahoo answers obsolete for all but the more meaningful questions, like "When I flush the toilet, does my poop go to hell?".
But it's starting to get to me... I fear I may be converted by the very thing I sought to convert. The temptation to cut loose on some of these people is almost too great, but I must remind myself that to do so would be to turn on my belief that there is yet hope for humanity, and that even those less gifted in the noodle department can still use the tools at their disposal to educate themselves a little better and be able to hold up a decent conversation, nurture vs. nature, that sort of thing... The circumstances to which one is exposed, I believe, affect quality of thinking, and it is quality, not necessarily quantity, which is more important in achieving a correct understanding... In which case, I'm the wrong person for the job, but, one has to have their goals in life... This is horrendously oversimplified, and I could go on about it for days, but I figure shorter is better.
Just my thoughts on Yahoo answers, and why it's dumb as all hell.