Do they ever actually use the map updates you send them? I sent them a map update of a major road which was missing the first week that MapShare was implemented, and after about a month with no update, I submitted it again, and they still don't have it added. From what I can tell, they just ignore and map updates you send them.
Mapshare is supposed to only updated error like wrong name, POI and street direction... the second menu for missing street ect is for you to repport and will be added in a new map version...
so mapshare will never add new road, just correct error on existing road on your map