I for one specifically did not apply to Y Combinator this year because of the big stake/small amount of cash they offered, though would have loved the mentoring and publicity. Six per cent for $6,000 per founder might be okay if you are a couple of guys or gals with an idea but if you are already profitable, it just does not make sense.
There almost needs to be a Y Combinator for small-but-already-profitable web businesses, offering much better terms.
Great talk, btw, Matt. As a fellow bootstrapper, it resonated with me.