There's 9 posts, right? With various fills throughout. Now let's say you're on page 14 of post 9, and there's a fill you're looking forward to on page 1. You also really like a fill that was in post 8, and it's still getting filled, and a couple in post 7. But you can't remember the pages they're on, especially when it moves onto the next post, and you could bookmark all of those fills you'd like to see prompted but there's always a risk those bookmarks will dissappear or accidentally get deleted. I've lost my bookmarks 3 times on my 4 year old laptop alone. Three through my own stupidity, but even a badly formatted update can do something you never expected.

So you can't guarantee you'll remember all of the posts and threads al of the fills are on, that you want to keep track of, and one fic you might have been keeping an eye on might go a while without updating so you might not even remember what you need to look for when you next check again. The best way to make sure you can catch everything is to flatmeme, you can't miss anything, everything new is on the last page, and you can scroll back and forth between fills and replies.

It took me a while to warm up to flatmeme view, myself, but once I did, I've never gone back to thread view. How will I know there's a fill on a prompt I was keeping an eye out on page 2 when we're all having a party on page 16?