Aww — looks like Google Map Maker is editable again in Canada. It's got some restrictions now, including one that The Great Unwashed can't edit polygons any more (which, in my 'hood at least, means no more polygons nicked wholesale from OSM). But the main new feature is: “Top mappers in your country are now empowered to moderate your edits”. These Regional Leads bless your edits … once they get around to it.
Seems that most of the comments on the Canada forum are of the form “I added my business X months ago, why hasn't it shown up?”
Now, if only there were a thoughtfully moderated alternative to Map Maker out there … ☺