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 think this is more a result of the increase in acceptance of entrepreneurship as a career option. Adding to the list of predictors of a tech correction, when you have a bunch of investment bankers and management consultants coming into consulting, you know you've peaked.
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.
Ehh they aren't super interesting but there are good businesses in there. Out of the ones I saw from both days AON3D, InnaMed Vinsight, Cowlar, MarketFox, Trade, BulkMRO, Hogaru and SuprDaily all seem to have good market niches and achievable goals.
Most businesses are boring. I'm actually a fan of how so many of these companies are taking proven tech to industries that operate like it's 2005 or even 1995. That's what it will take for tech to make the world more efficient and productive.