Not just an issue for documentation, but also for marketing materials. I can't count the number of times I've looked into some app that was referenced vaguely

Not just an issue for documentation, but also for marketing materials. I can't count the number of times I've looked into some app that was referenced vaguely in a comment somewhere, only to have to dig for half an hour on that thing's web site just to figure out what the thing is supposed to even do in the first place...