It makes others lose their interest in using the Buy/Sell forum too..
Well, I agree that bumping should not be allowed, but integrating BOTH this new style plus one item one ad is obviously difficult..
People who wants to sell like 10 items will bury all the other sellers threads behind, and frankly, our people ain't too keen on finding the patience to browse through various pages to keep track of certain ads..
A seller who posts his ad today gets attention, but if he adds pictures for others to see the next day, his thread would already be hidden beneath tonnes of other threads..
This is just my view, although its simple to counter the new "style" by changing the settings on the page itself, the one item per thread rule doesn't quite cut it in my books..