There's a trick to aiming for a specific audience besides doing the market research and focusing on trends. It's a delicate balance requiring you to maintain heart but also attain marketability. The two do not necessarily coincide. Look at the big blockbuster movies. Many of them lack spirit. They are huge, loud and visually impressive without the benefit of feeling (outside of awe). Books can be this way too. Mass market paperbacks that hit the shelves of Target and Wal Mart can sometimes be the quick to press drivel that just sells copies.