Help Me To Help You!

Lately I have thought a lot about writing an instructional book or shooting an instructional video. One question, though, has been nagging me: am I doing something useful or not? See,  I have many ideas about the topic and format of the instructional, but I have no idea what YOU guys are interested in. I have seen people spending months in writing "The Ultimate Encyclopedia of Guitar Playing" just to discover that nobody was actually interested in it. I want to create something that can actually helps and interests you. So, here is you occasion to make a difference! I have prepared an online questionnaire that will take you less than 1 minute to fill. Your opinion is important to me! If you have just 1 minute to spare, please help me in helping you! Thanks!!