1. Create logging triggers on some actions ("You get [something] from corpse of [someone]", on aggro attacks, on mob stay here, on look at mob, etc) for ZMUD, TIN, ETC
2. Create log parser (I can write it on ASP.NET and publish in inet quiet fast after first log appears)

So people will have to do nothing. Just execute triggers script in their client, and then post log on the web. Log upload can be allowed to all or to certain people. It does not matter.

In created database will be counted percentage (how often iron weapons can be found on the floor of Velkyn, etc) like WOW thottbot servivce..

Log parser will not "cut off" some "secret" items. It should be cutted either by clientscripts or by output wiki engine.