I dunno about the ethics. If it's free stuff, sure. Mostly, tho, I agree that gallery is a fun place to talk shop about an image. So I like going into technical details. There is also a backwards credit element these days. What I mean is, with all the third-party content floating around, naming the stuff I bought gives me an excuse to point at the stuff I didn't get from somewhere else and go "see, see, I modeled this part all by myself!"