I actually offered to do exactly this (I'm a Sponsorfied founder), and suggested doing it much like YC office hours (small 10 - 15 minute slots) but via Skype o

I actually offered to do exactly this (I'm a Sponsorfied founder), and suggested doing it much like YC office hours (small 10 - 15 minute slots) but via Skype or Google Hangouts. Throughout the day I could easily do a few of these, and I'm always interested in new feedback and practice pitching.