Quip's lone developer here. Three years ago I didn't know a lick of javascript, not to mention backend architecture, frontend design etc. I've come this far only because of the YC community. Almost all of the things I learned started as a link I saw posted here. So thank you.

With that said, I'm applying to YC S12 with Quip. I'm a solo founder, and if you're interested in the project, let me know. I could definitely use a backend wizard. I'm also looking for feedback in all its forms. Let me know how I can improve Quip, and what features you'd like to see!

Quip currently doesn't work on mobile, and there are definitely some bugs floating around. Things are a little rushed with the looming YC deadline. If anything, refreshing the page usually helps :-P

Considering how broken YouTube comments are, I'm always curious to see new ideas for video commenting. This looks very interesting.

You should take a look at what Omnissio used to do. They were an early YC co that sold to YouTube with a similar concept.

Indeed I have. They were bought by YouTube the project somewhat dissolved there. I think there's still plenty of room for people in this space :-)

This has a lot of obvious applications in education, and maybe even some potential in medical diagnostics.

Interesting. I'd love to hear more about the medical diagnostic applications!

Dave, are old farts permitted to check you new invention? Where the hell is it?

Congrats on the great idea. I agree that it has potential applications for educational videos. I tried with the circumcenter video I made when I was a teacher. (Bug alert: my comment on Quip was supposed to include the text "mind=blown" but it turned into "mindblown".)

Hopefully I'll see you at YC this summer! My startup is also having fun with video timestamps, though in a very different way. I think now is the right time for that. Anyway it was fun playing with Quip. Let me know how I can help it catch on! Maybe we can partner up. I'll PM you. It would be funny if 10 years after being math majors together we ended up doing video stuff together. That would be like...mind=blown.

Thanks Tim! That bug is a hack to prevent server-side interjections. I intentionally remove all strange characters just to make sure someone doesn't do anything silly. Of course I'll need a better hack though. Anyone on here have any suggestions?

Awesomeness. Working as a video editor, I would love a system like this in place for clients to give feedback. It would greatly streamline the revision process!

Excited to see this get integrated into platforms across the web!

This looks like a great way to annotate dance or sports videos!

Great job David. Quip's potential applications are endless.

Great idea, Dave!