I know this works as advertised because I have seen it working. Changes (oneway direction changes) that I reported, then removed the 'personal correction' from my tomtom, came back to me as 'approved' corrections from tomtom.
It does not work as advertised when they never seem to correct new or alterred (ie, widened, rerouted, etc.) roads, which is supposedly a feature of MapShare.
The only commercial/advertisement I've seen for this was a rather stupid TV commercial that would make it impossible to work as advertised. A guy pulls up to road construction in his car, so he uses the MapShare feature to note it, and then syncs when he gets home? For temporary road construction? Who cares about a road that's going to be blocked for a week? It will take longer than that for TomTom to verify it (if it's even possible) and get the MapShare update out to everyone. So it's not working as advertised, and the way they advertised that it works is ridiculous.
And, to set the record straight (for the last time I hope), it was never said that you could add roads to the map. You can't! The only changes you (or tomtom) can make to your current map are street name, street direction, block / unblock street and add/remove/edit POI. Any other mapshare option is just a 'report'!
No, but it was "advertised" in the product description that you can notify TomTom of these new and changed items, and they will verify them and send them out to all MapShare subscribers. I've yet to receive ANY of these changes, and I live in what is technically the biggest city in Florida.
Personally, I am hugely impressed with mapshare. I have corrected street names, directions and unblocked roads that were incorrectly 'closed' and it has all worked perfectly, as advertised. But then, I am not expecting it to be able to do things that it was never designed (or advertised) to do!
Obviously, you live in a major city. But what about the rest of us that don't live in a New York, Chicago, or Los Angeles? I haven't received ANY map updates of closed or newly open local roads. One of the first things I did when I upgraded to MapShare was submit the correct name of an erroneously labeled local major highway, and also notify them that it is now a 4-lane instead of 2-lane road. I have received nothing back from them via MapShare....absolutely nothing...about anything in my area of the country. This is a major new road that is the only road to get to the east coast in my area without traveling an hour north or south to two different cities.
Judging by the responses so far (and the reviews out on the internet), I would have to contradict you in that MapShare isn't just not working as advertised -- for most of us, it's not working at all. I, for one, feel extremely ripped off, as this feature and the new maps that were required to use it are no better than the previous map version for everywhere that I drive in the SE USA.
Basically, unless you live in a major city, it's a worthless feature. I'm sure I received all your local road blockages and re-openings as well, but I've received nothing for my own area of the country, regardless of how many dozens I've submitted.