I am in the process of updating and deleting some photos from the site, because I have found one picture is better than another.
The only thing I do that may be frowned upon is in the case of certain aircraft, I may upload "progressive" shots either of an arrival or departure, but that is typically warbirds or something unique.
Otherwise, that is the nice thing about being able to arrange my photo gallery and something Ken has designed so well in the database, then you upload what you want, put it in it's own folder, then the pictures that are new are the only ones that pop up under your name, and it stays fresh.