Hey Trevor,<p>great second post.<p>I agree with most of what you say but have to point out that you left out a big technique: search trends.<p>what you describe is finding apps that are already there and competing against them.<p>A different approach would be analysing search trends and match against niches with no apps.<p>For example, I remember discovering that paddling was a huge "industry" (as a sport) with ZERO apps.<p>For this, you would use services such as SearchManSEO or mobileDevHQ to identify niche "hotness" or the oldschool SEO way using GoogleTrends/Keywords.<p>hope it helps,
Giacomo