Please take a look at
http://en.wikipedia.org/wiki/Forest_(disambiguation)
which has now become an index of all things that somehow contain "Forest" in their name, including DeForest Kelley (an actor) and Forrest Gump. It also contains dozens of links to places in the UK that we don't have articles about yet and that have "Forest" in their name. User:Pigsonthewing seems to insist on having these links on the page and keeps adding more.
This is problematic because "articles" like this become free-for-all linklists to add unstructured, useless information. It is also not the purpose of disambiguation pages to be a list or an index of all things with a certain text in it -- they are not search indices and are pretty useless as such. If I search for "Forest Glade" in the UK, I don't expect to find that page by visiting the "forest" disambiguation page. In fact, it might make finding things more difficult for hapless Google visitors who stumble upon such pages from search engines and find out that they point to nowhere.
The purpose of disambiguation pages is to list articles with the same title where I'd otherwise have no idea where to find them. And this is made much harder by these chaotic linklists, as the actual information that I want gets buried under a heap of "Oh, look, I found another name with 'forest' in it" style crap.
I believe we should set a clear policy that - Disambiguation pages should link only to pages that actually exist - otherwise, if the subject is worth describing, it should get a brief description *on the disambig page*. - Disambiguation pages should only link to pages where there is a *substantial risk of confusion* with the actual page title.
Currently, Wikipedia:Disambiguation makes no such recommendations.
On another note, I think that our articles on numbers, such as "one hundred one", have a similar problem in that they become free-for-alls to add completely useless information. For example, the article
http://en2.wikipedia.org/wiki/One_hundred_one
tells us that 101 is "a .com URL that redirects to the Disney .go.com website", and "in the title of the movie 101 Dalmatians, starring Glenn Close". This is complete rubbish. Anyone who cares about the movie knows where to find it. If we ever have a Wikitrivia site, that might be the kind of material worth adding to it, but it does not belong in an encyclopedia. In my opinion, all these number articles should be deleted except where there's something really informative about the actual number (such as the history of the number zero).
Regards,
Erik