In the last 3 months or so I think this has gotten so much worse. Not only does it fill up the thread with pointless posts that have been addressed (sometimes days or weeks beforehand), it can actually be quite horrible - in one case a woman being slagged off because a few posters didn't read her sympathetic circumstances.
Could there be a 'report' reason just for this, and perhaps the posts don't need to be removed (but they could be?) but the user asked to 'see all' of OP's posts in future and shown how to do it? And repeat offenders suspended....?!
Or could it even be a note before posting if you go straight to post on a page where you couldn't possibly have read all of OP's posts?
I know it's easy to do, and obviously sometimes OP will update while people are in the process of typing and posting or they haven't refreshed. But when it keeps happening it's really frustrating on a thread and good helpful posts get missed in all the 'OP has actually updated to say this' 'well how was I supposed to know' derails.
'Cancel the cheque!!!' is still as much of an issue now as it was back then!