Almost invariably, old threads are reopened by new members.
I just did a quick scout, and these were the first four reopened "necrothreads" I found. In two, the reopening was the person's first post; in one, the reopener had a post count of 2; the fourth was reopened by someone whose post count is given as 15, although he's been a member for a while...
started January 30, 2007
http://thefiringline.com/forums/show...9&postcount=32
started September 27, 2008
http://thefiringline.com/forums/show...1&postcount=10
started May 1, 2001
http://thefiringline.com/forums/show...2&postcount=27
started November 26, 2005
http://thefiringline.com/forums/show...1&postcount=22
I'm only semi-serious here, but what if the forum software could be tweaked so that members would only have "necrothread reopening privileges" after some minimum post count?
Sort of like the "For Sale/Wanted" forums?
Instead of seeing the message that says "Are you sure you want to reopen this thread?" they'd see one that says "No can do, Grasshopper... go, and post some more..."
I bet this would eliminate at least 95% of this.
Oh, and... I
do like the new thread-dating arrangement.