Hi, yes, my impression is that OSM is not popular in the US, aside from a handful of contributors. This is partly because in the past, there was an impression here that ‘maps are plentiful and free’: from Google, Yahoo, Bing, Mapquest. A few more people have become interested since Google began charging high volume map users. Although my area has had a number of people overall contribute to it, for the most part it is my private map playground - I have never had an edit conflict. But I would welcome others. Any attempt at creating a ‘community’ locally has been met by disinterest.