Much smaller user base Since SO content is licensed under creative commons, there's no reason they can't feed in all questions into SO... I suppose it might be

Much smaller user base Since SO content is licensed under creative commons, there's no reason they can't feed in all questions into SO... I suppose it might be tricky to merge votes of the (much larger) SO audience with votes of their audience, and has interesting implications to SO's business, but it's certainly doable.