There's a search function you can use to check on your side, but I don't recall any recent topic on this, so you might as well create one if you want.
As for the second question, nah, there's no really such thing, even though it would be quite useful.
The closest thing we get is when you click on a thread from the main page, you do get put where you left off last time if you read it... But it's only limitedly useful as you can only access the latest thread from a section...
Unless I'm missing something...
