Verified answer

As many as you want, I guess.  You'll run out of time before you run out of really stupid questions.

Mostly none. I only answer questions in politics if one of my contacts asks one there. Too many stupid, idiotic questions there/here 

as many as your userlevel allows

However.. why would you?  Answering stupid questions only encourages the askers to post more stupid questions, and gives you a very low chance of getting "best answer".

Non-questions and "do you...." or "what is your...." questions should be reported

The number of questions you can answer is limited to 20-160 per day, depending on your level.  It's your choice whether to use that limit on stupid questions in politics or not.  For example, if you are at level 3, then you can answer 120 questions per day, which is 5 per hour.

roflmao -- i try to hit at least ten when i'm bothering to reply at all

I don't see any dumb questions. Most of them are really hard. 

All questions here are really stupid. 

I ignore most of them by pedophile trolls.