1. If you log in across various devices you'll end up with links to the last post you read in the topic. Unlike other forum software we don't consider all posts on a "page" viewed when the page downloads, only as they are scrolled into view.

2. We use HTML5 replaceState to update the URL as you scroll. Just grab the link from the URL bar and it'll take you to where you left off. Or additionally click the "Share button" for a copy and pastable pop up.

3. Yes we render a lightweight version of the pages in a <noscript> tag for google indexing.