Are you planning on filling out all the blank spaces on the site with lots of ads? Do you think this will have a negative effect on the site?
Traditional banner ads? Probably not.
Sponsored questions/answers? Maybe, if it makes sense.
I would prefer to monetize this site in a community friendly way, even if it makes less money.
My current preference is to allow some sort of paid awards (give someone $5 if they post a great answer?) or maybe "super upvotes" ?