I thought they would credit the photos, but I looked at several past issues and they generally don't when it comes to such small pieces. It really didn't bother me, because the credit itself would have had far less value than the actual presence of these people on the site.
Bob doesn't have the analytic vehicle that I do to see where his website traffic is coming from, but I'll bet there are a few more eyes on this forum in the next few days.
