I'm surprised the bids are so low for this type of advertising. This forum has a huge amount of traffic and I don't know about others, but that "News:" section is generally the first place I look when I come to these forums. Very good way to keep updated, and generally there is good info in those links.
Are there anymore limitations besides what was originally posted? For example, can a user rent the ad space and link to a thread on this forum? I'm assuming so, but might as well ask before bidding.