I haven't read through the 3 pages of this topic, but I'd like to put my opinion on this as I'm a successful website designer, and know what things I like and dislike about websites.
And disabling right click is something I absolutely hate. There's no use for it, if somebody wants your image, they'll get it somehow.
Sometimes, if I really love a photo and want to save it to my computer (not for prints, not for redistribution, just simply for enjoyment or inspiration) I have to try and get around the stupid right click disabling scripts by going into the source code (not at all a hard task for someone who writes HTML every single day, but still not conveniant). And there's the printscreen method for those who are less computer-savy, or for flash websites.
There's something else I don't like. Flash is used by designers as a gimmick to make people visit their websites...but in all honesty it's just annoying and is generally accompanied with an annoying background music choice.
Anyway, my point is, if I were to put my photos in an online gallery (which I will at some point when all my clients' work is done), I would leave the images with no right click protection. What's somebody going to do? Make an 11 by 17 photo print from it?
You wouldn't even have enough resolution for a decent 4 by 6, so it doesn't bother me. And as for reproducing on the internet? Also not a problem, my personal signature is large enough (but still attractive) that it prevents it from being easily removed from *most* photos.
I also sometimes try to right click on really beatiful photographs to look at the Exif info to see what type of camera, aperture, shutter speed, etc. were used, and having a non-friendly right click plagarization warning is not fun.
Basically, if somebody wants to save your photograph, they will. The absolute ONLY way to prevent someone from saving it, is to *NOT* put it on the internet if you're really that bothered. Simple as that.
*Edit* To add to my last statements, I have also been known to close a window with a digital gallery, nomatter how nice the pictures, if the right click disabling or flash has bugged me enough, so I don't think the benefit is as great as the loss in this respect.