Further to my previous post, I forgot to mention about competition questions.
Many online competitions do not have questions to answer, they just require you to enter your details.
Others have amazingly easy questions that everyone should know the answer to or questions about the products you could win. The answers can often be found in the text on the page or via a link supplied.
When I don't know the answer to a question I make a judgement regarding how long it is likely to take to find the answer. If the prize is one I really want to win then I will spend a fair amount of time researching the answer.
Sometimes I will abandon entry if I think the effort of finding the answer is not justified by the prize to be won.
Many competitions ask the same question as they are syndicated across a number of websites by the prize supplier. Once you've found the answer you will be able to enter all of these comps quickly and easily.
Answers about films can usually be found on IMDB (Internet Movie DataBase). For general knowledge questions I use the Google toolbar.
With practice you will be able to phrase the search terms in Google to get exactly the answer you are looking for on the first page of results without having to visit any sites.
I have made it a rule not to enter competitions unless I know the answer to any questions being asked. This rule has served me well.
Happy comping.