We actually don't have any rules, nor even guidelines really on the posting of photos anywhere on the site, other than they should be O gauge train related. Perhaps we should, and if anyone would like to propose some, please either post them here, or contact me privately: firstname.lastname@example.org|
Since we don't have any yet, I think it's fine to let images like these remain. I think that as a general practice, if you're posting an image that is significantly doctored in Photoshop (or whatever image-editing software you're using) that you should make note of it in the post. That way, everything is "on the table" so to speak, and no one will get the idea that the poster is trying to delude anyone. (And I'm quite certain Dave was not trying to delude anyone!)
I have an appreciation for how difficult it probably was to get that photo of the model overlaid right onto the tracks like that - really neat effect.
Oh, and a quick word about the thumbnail - if you alter the photo after it's been posted, sometimes it takes a while for the thumbnail to get updated. (And sometimes it takes a few updates to the original post with the photo in it to trigger it.) Also, sometimes browsers "cache" photos, and this varies by browser (and even version of browser).