I will get down voted for this but its how I feel. I have not been excited for an app or a new website in a very long time. I think we are in a rut. None of these ideas sound very interesting or exciting to me.
I have to wonder, what's the catchet of YCombinator when you have so many new startups being churned out every quarter? YC is always going to be fine - they get their 7%. They're simply increasing the bandwidth and they'll get a few hits, but we should be prepared for the average quality of YC start-ups to fall with volume.