I'm sure there's a way to make users want to enter captchas, like by making it a game of some sort. It would be cool if each captcha was some sort of pun or rid

I'm sure there's a way to make users want to enter captchas, like by making it a game of some sort. It would be cool if each captcha was some sort of pun or riddle that the user had to answer. If they don't know, they get another one. It would be kind of fun to know that only clever-enough people could gain access to your site :) (just an idea)