The major (and as yet unanswered) question, of course, is how Google intends to police against malicious editors. So far, they're displaying the history of all edits made to a particular point to keep pertinent information from disappearing. What happens when a location has dozens of edits? Are users expected to sort through the chaff to find the wheat? It sound like a temporary solution to a problem that has not yet been well thought out; but if successful, the wikified version would be a major boon.