Separate section for craigslist/ebay finds

I'd like to see a separate buy/sell section for craigslist/ebay finds for items that don't belong to the member posting it (Buy/Sell: Not Mine section).

Most of the craigslist finds aren't from a member and they can clutter up the buy/sell threads for members trying to sell their stuff. It's frustrating having a for sale item get further bumped down because of a craigslist listing from someone who has no interest in the sale. Nothing should prevent a TW user from posting his/her own craigslist/ebay ad (provided it follows the for sale rule), just the links with items that are not being sold by the member posting it.