1. It refuses loading long pages (pages with a lot of comments) at some point in the middle, maybe it's due to my slow connection to this website, but even on slow connection it should finish loading in a finite time period, not leave me an uncompleted page. Recently I had really a bad time in trying to read all comments at http://news.ycombinator.com/item?id=192654 .
2. "Unknown or expired link."
This seems like a fundamental shortcoming of the continuation-based request approach. POST URLs should never expire.
Nope. You just add times to the closures.
On the plus side, because I have to go back, about half the time I go back I see someone has said something similar to what I was going to say but clearer and more succinctly, which means I don't have to bother posting whatever I was writing.
EDIT See the comments at http://news.ycombinator.com/item?id=195067 for more on the Scribd issue.
Some people apparently find loading the flash iPaper viewer as more annoying than viewing a raw PDF.
Often the PDFs that get posted are interesting enough for me to want to archive and read more in depth on the bus, when I don't have an internet connection. Scribd makes this a royal pain in the arse.
Also, I strongly prefer the native feel of a decent PDF reader over a slow Flash UI running in the browser. (no, Adobe doesn't count as decent.)
Seriously, after the "last wave" of newcomers there's been quite a lot of crap on the main page. A downmod arrow would be nice. Not to decrease karma (it should be limited so that noone could downmod a 1 point story) but to keep high quality of the site.
I know arc itself has two versions one developed by the arc community (anarki) and then a separate one developed by pg.