The thing was written to give a linear history(if I'm not mistaken) so that when you click next page it's what the next page would have given you at the time yo

The thing was written to give a linear history(if I'm not mistaken) so that when you click next page it's what the next page would have given you at the time you first loaded the page. He could just do a page=4 query string and not use continuations and make the pages the same for everyone with the risk of seeing duplicates. It will vote for the original if the urls are the same when you submit it. This is a simple check though. Foldable threads are client side. I wish it had notifications. The other items re formatting could be easily fixed on the submission page.