Julie,
I think it's impossible to distinguish between a "personal" site and an "advertising" site. I had someone try to tell me that they only put pictures of their dog on their site as if it were a scrapbook. I asked if they sold their dog at stud or bred litters and they said "yes". Well, then, that's an advertising site.

Jim and Linda don't have a website. My dogs do. I breed occasionally and Rowdy would love to sire another litter so they are being advertised in the strictest sense of the word.

And, BTW, a scrapbook gets shown to maybe 20 people. Your website can be viewed by millions. It isn't a matter of you promoting it. People search for what they want and they'll find you. So, while people's perception may be that what's on the internet is "free", the fact is that the internet provides tremendous reach and, therefore, has tremendous value.

But I'm not trying to make money on low-rez images. Folks still send out stud packages and litter packages and they need to make low-cost prints. You can buy a pretty decent photo printer for well under $100 and run as many prints as your ink cartridges will allow. I think that's the primary value of my providing hi-rez files. Will I lose that print revenue? Not a chance. They were never going to use me anyway.

Jim