jonb: As a frequent user, my main way of navigating is using the Discussions bar on the front page and click on the subject headings that look interesting. A new thread would have to be titled 'deal on xx' and they might clog up the Discussions box.
Looks to me like the genuine 'new deal' number of posts (excluding discussion) to this thread rarely exceeds one or two per day. Based on this assessment clogging the Discussions bar will not be an issue.