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Some of the markets , like posters , postcards or calanders dont want people as the focus of the picture, more landscapes.

I'll have to keep this in mind since I'm offering some of my work on posters.  I'm basically just taking a blind approach to it and not with the focus of trying to make money from it.  But if I did try to generate a significant amount of sales I would definitely need to keep in mind what types of posters are selling or what type of wall art is popular within certain markets.