If you want my two cents, you're already right about most of the stuff you had mentioned in your first paragraph. The best problems to solve are the ones that y

If you want my two cents, you're already right about most of the stuff you had mentioned in your first paragraph. The best problems to solve are the ones that you face personally. On your ideas, I would remark that job hunting and online dating are both still very underserved problems, and as you mentioned, vastly inefficient. Dating is an interesting scenario - OkCupid was actually doing very well at solving the problem with a high success rate, before they started regressing their algorithm after their acquisition by Match.com. On the other hand, job hunting will always remain an elusive problem.