Interesting that the piece calls YC an incubator as well. I think for the lack of a better word, the definition of an incubator has changed considerably since the late '90s. Neither YC nor Betaworks are incubators in the same sense that Idealab was (no sharing of people, or HR, or accounting) but more sharing of wisdom, ideas, technology (in the form of APIs).

Overall, it seems like a decent way to "incubate" startups which are otherwise long, lonely journeys of massive highs and lows.