CanadaRAM said:
Honoured more in the breach than in the observance, methinks.
IF there were no bumping, then the ads would not be jockeying for position all the time and there would be less reason to bump in the first place.
Dunno how the system would enforce a "wait 48 hours" or "wait one week" before you bump your own post rule - how would it distinguish between a bump and a legit answer to another poster's question?
Bump posts that have no meaningful content are always removed,
if they get reported. Otherwise, we might or might not spot them.
Bumping to say "still available" or "I really need to sell this" is considered the same as bumping by saying "Bump" (none of them allowed) but lowering the price, even by a small amount, and posting the new price is permitted.
Not everyone follows the spirit of the rule, of course. Luckily, it's usually not hard to tell whether or not a given post is meaningful. As you point out, no automated "48 hour timer" system could work since BBS software doesn't have the intelligence to distinguish bump posts, so we're stuck with the human touch.
If some but not many bumps get through, it's a minor inconvenience to other threads, and probably rarely if ever the cause of nonsales that might otherwise have been successful.
Perhaps the Marketplace Forum page should show
140 threads by default, instead of
40 threads, so there would be less competition for the front page of the forum! Bookmark that link and you can see taller Marketplace pages anytime you like.