I have a photography page, and I always considered it an advertising medium rather that social networking. I do that with my Me facebook, I was reluctant to join facebook, but it has been extremely useful in keeping in touch with my many friends/family around the country/world. My FB page gets more regular updates and content than the website/blog wich is a more considered/edited medium. Both need to receive new content regularly though.
I have been listening with intrest to the new rulings on advertising, and facebook sites, I keep an eye one it reguarly so if one of my few commentariat suddenly got tourettes, I would remove. This is in a totally different league to national or international brands of course, so I have no real concern.