In my short time playing with openstreetmap I learned that openstreetmap is more of a spec/aggregate/foundation entity that seems to be grouping "open street mapping" efforts under their banner. It's more of a spec than a single data source. I learned this when I had to go elsewhere (government sites and colleges) to find "open" street mapping data. It's was a little confusing to say the least and I still may be misunderstanding their actual position, but that's what I've learned.