Well obviously I can't tell as I didn't make them, but I just know that Photobucket does that. Though it could be that your icons are already smaller in size. With mine I noticed that I had like 25 KB icons before uploading to PB and then after that only 5 KB icons and I could tell that the quality had reduced. I notice it with some other people's graphics too. But maybe with yours it's fine because the size of KB is already smaller. I also still don't understand why PB does it or how it works, because it's just .jpg files. I just wanted to give you a head's up just in case, you know?

I really do love the icons. The coloring in those Haven icons are absolutely stunning and I think I totally have to snag them ;) And that 2nd icon has some of the most loveliest cropping I've ever seen. Your use of color and background and textures (like the last icons) is just always so amazing!