You know Open Angel Forum has funded YC startups, as have I personally. I love TechStars and YCombinator because they produce quality startups that I can potentially invest in, partner with or have on This Week in Startups.
There is nothing competitie between YC and JMC I can think of.
But it seems kind of weird to see you warn start-ups off from sharing their stuff with facebook through their YC hookup. After all, if the plan of this 'cooperation' would be such a negative for YC funded start-ups I would think that YC would pull out of such a cooperation in a heartbeat. It's not like they're stupid.
Give them the benefit of the doubt and see how it develops.
After all the risk to the YC reputation is considerable so you can take it as read that they've thought this through.
It's really strange from what people are saying in the thread here (without speaking for anyone).
Another reason to not "see how it develops" is Zuckerberg's track record.
You absolutely have a point there.
But still, for Zuckerberg to openly screw a YC backed company would be to screw YC as well.
And I find that hard to believe.
Doesn't mean that it is impossible, just implausible.
Zuckerberg's moral compass is set on "WIN."
All the other 'zucks' notwithstanding there has yet to be a clear cut case of fraud to come out of all this and I can't imagine YC et al would stand by idly if this happened to one of their investments.