I don't think you can get to anyone's Facebook page via a link. You have to go to
www.Facebook.com, sign up, and then type in the person's name. Facebook will ask if you want to send them a Friend request, and if they say yes, you can see their profile and post notes on their wall, comment on their photos, etc.
I've found it very helpful for staying in touch with a lot of artists that I don't get to see very often -- and for "meeting" lots of new ones, too. It's more informal than sending a direct email to someone. Once you get a bunch of Facebook Friends it feels like being at a very large, rather slow moving (and silent!) party. There are lot of people there, some you know and some you don't know, but you usually have a friend or two in common.
You can set very detailed privacy settings so you don't have to share everything you're doing with all your Friends. And no one can see what you're posting if you haven't agreed to "Friend" them.
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