I totally agree to the opinion of Corion (thats why I upvoted his node) and disagree with your proposals.

Furthermore, I don't think that your description of geocaching.com is correct:

On that site, negative feedback IS given to the cache-owners. It is not done by a number (favourite points are only positive), but with the log-entries: From time to time you find log-entries stating the location is a boring or even horrible place (e.g. used as a garbage-dump by the locals). And I use that information before deciding wether I go for a cache or not.

Additionally, there are rating-add-ons like gc vote, which have the possibility of negative votes to caches - and that addon is very popular with my caching-friends.

So there seems a need to be able to express negative opinions even in the perfect world of geocaching.

Note: According to the guidelines (How should I spend my votes? -- General Voting Guidelines) I have downvoted your post. Which is nothing personal. But it is my only way to indicate I don't want that proposed change in perlmonks without cluttering the site/thread with a me-too-posting.