Another brilliant (and easy!) way to come up with ideas is to get your target audience on the phone and ask them what you can help them with! Simply setup a bridge line at FreeConferenceCall.com and set a time and date for your Q&A call. You don't even need to setup a web page or anything! Just create a blog post or use the Facebook and LinkedIn events and share that one link to as many people as you can.
Once you get your target audience on the call, keep detailed notes as to what they are asking you about and which questions you seem to be fired up about answering. Where there is passion, there is a product.