If detected topic shifts within threads cause changes (paying ads) that aren't going to appear on dynamic pages for two to three weeks, then it seems a waste of space to put them into the threads themselves. Most threads go away before two or three weeks have passed. Right now on this very page I see a small ad between the text box and the blue "Add to tracer" line. But it's public service ads, like your exerpt said they'd put on dynamic (frequently changing) pages. Rather than having people click on those for no good effect, why not leave the ads on the main mudcat.org front page and any others that don't change at all? Then people can be more certain that the ads they do click on, in the name of supporting Mudcat, will be useful? Some of the "real" ads are a tad sticky--I just clicked on a vinyl record site in Australia that was unwilling to let me use my "back" button to leave. I had to use the drop down arrow and back out by skipping their portal page.

But heck, like the breast cancer fund page, I'm willing to click once a day and help support Mudcat. But wait to announce the success of this endeavor once the first check has cleared!

SRS