i think it's more like a place you put a resume and get business contacts. it's not much of a place to advertise because you need to be a member and signed in, in order to see what they have. i think i had to join to get an a location someone was working at. now i get requests to be a contact to total strangers.
Bill, don't join unless you want to get emails forever. I can't find a way to unscubscribe, and I only joined at the request of a friend. Never needed it, personally, and really wish I could get rid of it now!
Bill, yes it's good to use. I don't specifically use it to promote my faa site, I use it to promote my photography business and what I offer. My faa site is just one portion of the business.
It's doubtfull you will get inquires about buying your work. I don't mean that in a sarcastic manner, it's just that the site seems to work well as a business to business link. I've had galleries contact me via my homepage website after finding me on linkedin. If you link your POD website to Linkedin, art collectors will simply navigate to the site to purchase. I feel it's value is useful to market yourself, and you get to pick and choose using keywords exactly HOW you wish to appear to the rest of the world. I've found it works for selling stock photos, since so many publishers and add consultants are pounding the pavement.
You can control the emails you recieve from Linkedin in your control panel. I just had to shut down responses from one of the forums. YES the emails can be a PITA if you allow them to update you everytime someone signs in.
Thomas S. is correct, email distributions can be changed in the control panel and it is best for business to business contact. They have a few photographer/photography groups you can join but it's not a place to create a portfolio for display. If you already have a photographic business and want to network with executives that make purchasing decisions I would consider it.
I use Linkedin.......as a networking site as it is supposed to be. Membership in an artist group is as Wendy 's post a great resource for artist websites.
As in anything else, use it for what it is intended and what you put into it is what you get out of it.