It would also be good to include name and prototype links in the rss feed. Some angels/VCs may not even visit the site at all but simply use the rss feed as a source of startup news.
I'm not sure this is up to YC. I doubt they want to go to everyone they're trying to fund and ask permission for this nor do they want to deal with potential investees feeling like their trust has been breached.
Furthermore it's probably in YC and their founder's interest that people not know what they are working on until they feel ready to disclose it.
cool - we'll add higher resolution demo support later down the line. I don't know if google video might be more appropriate, be interested in your thoughts...
Vote: -1. It would just clutter the normal display. I'm not interested in your web site unless I'm interested in you based on your comments in which case I'm more than happy to click on your username to find out more about you. Next it'll be avatars. ;-)
That part is good, yes. What I'm worried about is the time and effort it would take to get onto the leader board. There is already a profile linked to every username where people can list their startup urls, blogs, or contact info.
An adjustment to your idea that I'd feel more comfortable about would be having an url field next to your name in comments/submissions. So your comment would look like:
1 point by amichail (mystartup) 3 minutes ago