This book is filled with great ideas for how to research and then market your product; all before creating it.  If, like me, you've already created your product, it's still a great exercise in evaluating where and how to sell it.Early on, the author advises you to take notes (on this book and others).  I found that advise quite helpful.  I ended up highlighting and entering notes through my Kindle for iPhone app.  Those notes are now a wonderful resource to me.Great read.  Worth your time and your money.I'm going to apply these principles to my new book that walks you through building your first Facebook app in about 30 minutes. 

  
Social App Development Quick and Easy