As I've looked thru 'new posts' today I've seen a few threads that show a post today from the summary, but when I click into them, they have no updates from today. An example thread is:
http://www.theoutdoorstrader.com/threads/639954-Fs-dpms-bcg
From the summary this one shows: Last Post: Today 04:05 PM
http://www.theoutdoorstrader.com/threads/639954-Fs-dpms-bcg
From the summary this one shows: Last Post: Today 04:05 PM