[Useless]

I've just recently installed phpadsnew so I can easily toss banners left and right across my (non)traffic producing sites. I've been looking at the stats it produces which reports both adviews (the number of times a banner has been displayed) and adclicks (the number of times the banner has been clicked). This seems pretty damned nifty. One could monitor these values and easily determine which banners produce clicks and which ones just take up space. One could then delete the completely suck-ass banners and add 'weight' to the banners which produce more clicks. This would have to lead to more effective advertising.

So, the question is, do any of you do this or do you just toss up banners and keep your fingers crossed like I have always done?