More than nice, I'd say essential if you want feedback. Kindof difficult to help with selecting birds you can't see.
I know I've said this before & got jumped on by a number of people but if someone uses your picture so what? How does that do you any real harm?
I couldn't care less if someone used pictures of mine. If they are stupid enough to do it, LOL.
I did notice that pictures of my Catalanas now dominate Google images. I was not real excited about it, because I do not think they are good examples. On the other hand, you would hope people are smart enough to sort through that.