The health insurance sector is what happens when companies no longer try to avoid seeming evil (think Facebook in 10 years). That's why Oscar, a venture-backed health insurance startup, has seemed to appealing—but one Valleywag reader's story is almost enough to make you miss Aetna.

Lyft, one of San Francisco's most beloved new apps, isn't a bad idea if you think about it very briefly: the city's transit service isn't great, so let's make it easy to pay for a ride from your fellow man. But, surprise, when you let almost anyone be a cab driver, your fellow man is going to creep you the hell out.