To my knowledge all for sell items allow commercial use for the renders, movies and what not. What would be the point if they didn't. As far as freestuff. I to wish their was a way to know in advance. I don't keep or use anything that doesn't allow commercial render usage. Not cause I'm trying to make a buck but because I don't want to have to worry if I had an oppertunity to make a sell. Anyway's it saves the freestuff provider bandwidth which is valuable.