Thanks for jumping in. It looks like the three dots are for seeing which forums are unread, but not a way to jump to the latest message. However I think I might have found what I asked about. After poking around a bit I noticed a tiny icon next to a message, that at first looks like a paper tag icon. Looking closer I can see it's a curved arrow. I mouse over it and it seems to be what I'm looking for. I'll have to test it out.