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Design and Skin Customization
musicianband:
"Which is the fifth day of the week? (six letters, small caps)"
with the obvious answer
"friday"
Hmmm...maybe not as obvious as you think.

You don't want to say "small caps"- caps is capital letters, small is lower case letters.
So "friday" is all lower case/small....no caps at all.
If you use that as a question, then when you are in the form designer you will be given a choice to include several acceptable answers. In that instance you would want to allow "friday", "Friday", and "FRIDAY"....all three should be accepted as correct answers.
Try to pick questions that don't have lots of possible answers. You wouldn't want a question like "Name a morning meal"...folks would answer all kinds of things, like "breakfast", "eggs", "pancakes", "oatmeal", "toast"... Instead, you might ask "What's the main ingredient to make an omelette?...and acceptable answers would be "egg","Egg", "eggs" or "Eggs".
When adding signup questions designed to frustrate spammers, you don't want to go overboard and make it TOO hard to join. Remember, their answers don't have to be correct!- but having several wrong answers will raise your suspicion and enable you to better judge whether they are legit. It's good to have a couple questions that might be easy for people with a genuine interest in your site subject, but that require a spammer to go look up the answer on google....they don't like to bother.
If your site is about orchids, ask a simple orchid question that might be hard for non-orchid lovers to answer.
In my own example, you will see that I have many questions in place...once in a while I get a complaint about all the questions..but not often. And I only get about one spammer every three months or so actually try to join, and because of the answers they give, they are easy to spot before approval. I find my best question is "Describe your interest in music or dulcimers"- with a longer answer allowed. Real users love to talk about their interests...spammers dont want to say more than one or two words, and they don't always make sense.
updated by @strumelia: 02/13/16 03:16:57PM