This goes back to the Limited Attention Span. With 3,000 applications they do not have time to wade through your marketing bullshit. Cut out the fluff. Want to tell a story in the app? Do it in the 3rd paragraph of a question or don't do it at all.
via entreposeur.com
Pretty solid collection of feedback from YC Alums (and even PG) here. Best of luck to all of you applying for this round!