it's a little tough to tell based only on the post-- I use unthreaded forum view, and since people can reply all willy-nilly to stuff... I can SORT of tell which one is which, but I know I'd screw up a couple times.

BUT

if you replied to the post with a link to the exact last post you updated, it would lead the next updater to the post where they could click "Next" and see the first post that needs updated.

(so, for example: "Updated through 2571311:

post body: {post:2571311}" ("Re: Re: Re: Re: Re: Re: NaNo excitement! "  ))

~j