Typically excellent advice from 37Signals:
“Target people who have never used a product like yours before. These folks aren’t picky [and] want something simple that works … For example, Nintendo goes after people who aren’t using other video game systems. While Xbox 360 and Sony one-up each other trying to reach experienced, demanding gamers, Nintendo goes after newbies. The Wii’s controller makes video games so simple that a three year-old can play it.”
Love it.