A slight criticism, looking at your application: asking me to fill out a PDF resume for a founding team is irritating and time-consuming. Is there anything that a PDF form can give you that you don't get from having applicants fill out relevant information into a text box? Drafting a PDF means that now I've got to spend time making my typography look pretty, getting things organized in a nice way, and generally spending more time on presentation than I'm putting into just conveying information.

One of the things I loved about the YC application was that it didn't require external files - excepting the Posterous video, which is a supersimple email-and-receive-link system.