do toi have to credit quizz questions that toi found at another website and added to fan pop.

toi dont have to credit the quizz questions..
if toi want to toi could put a link to the original in a comment.or credit the maker in the trivia section.

i personally think its lame to copy and paste quizzes. in my opinion toi should at least take the time to phrase the question in your own words, add a fitting image etc
im sure some of the quizz i have asked have been asked on other sites- not because i copied them there but because asking e.g. aboot the name of a pet is sort of an obvious question.

i have found quizz on here where people copy and pasted the question (including the typos :S)- in my opinion its plus fun to answer questions where the quizz maker thinks of funny ways to phrase the question, ou thinks of great options (like one of my faves from sualey asking if josh radnor is allergic to the little piping that toi get on the edge of birthday cakes.) and "personalizes" the quizz that way.
copying and pasting seems medalwhorish (yeah! thats a word) but salut thats just my opinion.

toi don't have to credit a quizz question that toi found elsewhere however if it is a difficult one ou a conpkiacted one ou a clever one, toi could always just say "Thanks to....blahblah for the question" in the description =)