Who Owns Your Data?

Nature's "Great Beyond" blog reports another attempt to force climate scientists to release their data. I'm of at least two minds on this: I believe openness is absolutely crucial to science (and society as a whole), but I understand scientists' concern about being scooped, and equally their concern about having their work misrepresented or quoted out of context. Mostly, I come down on the side of openness—how about you?