Many users have requested a more "forum style" of ad browsing while in the marketplace. To accommodate this preference, you can select "Forum Style" from the bar that sits atop the ad listings on any browse page.
The forum view is different from the Standard View in these respects:
No thumbnails by default (although you can toggle this setting by using the thumbnail menu above the first ad in the list)
Less detail in the right-most column making it shorter in height than the standard view. This allows more listings per page.
For classified ads, a mouseover message showing ad details such as number of replies, number of offers and item location.