I always say “yes”, as my pictures are pretty much all BY anyway. The net impact is that I visit their site to see my picture. It never makes much difference to me to see my picture on this kind of site, as
it is one of a bunch of other pictures with the same tag (e.g., “shark”)
they have located. So if this is “citizen journalism”, then I understand what you are saying.

I prefer when my BY pictures are used for something fun–like on a
website for a travel agency, or in an educational project, or in someone’s weblog.

I agree that the best citizen journalists are, well, mere citizens journaling.