I currently browse all/new exclusively, but #1 presents undesired behavior for me and lack of control for what posts would be included in this Since Last X page. I voted for #2 (New Since Last Bookmark) as I would use that over #1. I do not believe I can set all/new to sort oldest>newest and only posts from the last 6/12/24 hours, which would be quite useful to me (if this exists already, I would appreciate help pointing out how to do this). Currently, when I load all/new it is sorted from most recent to oldest. I then endless scroll down looking at/reading posts until I reach a few that seems familiar to where I left off at the previous visit/day. With #1, that top, most recent post when I loaded all/new would be marked as the start point of posts made after that post that will be shown in the New Since Last Visit page. However, if I was unable to fully catch up on all/new posts to where I previously left off at, some posts between where I made it down to and where I left off the previous visit/day will not be included in the Since Last Visit page as it would be going by the top/most recent post on the page when I loaded all/new. The #2 SLB function would be more useful to me as I could control what posts get included in the SLB page versus the most recent post on all/new being set as what is used to determine new posts to include. Without changing my browsing behavior from how it currently is, with #2 I will be able to mark where I started from on all/new before I scroll down toward getting to where I left off the previous visit/day, but the unviewed posts between where I made it down to and where I left off at the previous visit/day would still not be included in the SLB page. This is easily compensated for by altering my browsing behavior to browsing all/new exclusively via the SLB page. However, if #2 is implemented then I can just load all/new and immediately endless scroll all the way down to where I left off at the previous visit/day. I will then set my SLB bookmark there and then switch to viewing the SLB page exclusively in the future when I visit poal instead of browsing all/new. While on the SLB page, when I reach the bottom I can just switch my bookmark to that last post and reload to see any new posts since that post. With this bookmark ability and SLB page, I could browse new posts exclusively from this page and never miss any posts due to not having the time to endless scroll down all/new to where I left off at the previous visit/day in one visit/browsing session/page load.