Dear The Listers, I am facing a challenge and would appreciate some advice. I am not a professional web-worker, but have been subscribed to The List and lurked for quite a while now from hobby-interests. I have recently installed a very basic and barely customized Drupal installation, and that about sums up my skills (very basic html, css and php, almost no sql). I am now facing a situation that calls for a solution that may need to be slightly more powerful (although perhaps Drupal can handle it). I work with a group of researchers in psychology and health promotion (that is my actual job). This groups has the ambition to develop a website that provides an overview of the knowledge about how to develop health promotion interventions (i.e. how to help people stop smoking, exercise more, etc). An example of such a technique would be something called a 'fear appeal': placing 'scary text' or 'scary images' on packs of cigarettes. This website would ideally take the form of a moderated wiki. So far I think I would be able to manage by installing Mediawiki :-) However :-) There is also research on the effectiveness of these techniques. Ideally, such studies would also be added to the website and tagged with one or several techniques (e.g. "this study studies the effectiveness of fear appeals"). And ideally, each technique's page would list all relevant studies, and summarize their results, so that an overview page of all techniques can show the average effectiveness of each technique. For example, the fear appeal page would show a list of studies that studied the effectiveness of fear appeals, and in addition, it would integrate (quantitatively) the results of these studies. I am not sure to what degree open source wiki engines and CMS's (CMF's :-)) are equipped to deal with this degree of 'interrelation' between pages. Not to mention the 'calculation' part (this would be cherry on the pie, so I can live with leaving it out). Perhaps all wiki engines can do this, and if so, I'm sorry for wasting your time . . . Thank you in advance and kind regards, Gjalt-Jorn Peters -----------------  There is evidence that this particular technique doesn't work; I name it here because it's recognizable. If you're interested, drop me a line, I'm currently conducting a review on this topic :-)  This math-part I could handle in PHP  No financial means, of course . . .