Web 2.0 a personal learning journey

Danah Boyd recently wrote asking why the “tech industry fetishizes Facebook” and I can certainly see her point but having recently started playing around with it more I can see it’s potential for becoming a personal learning space for students and even staff. I’m just not sure it would be my tool of choice for my PLE given all the privacy issues. The biggest bugear is that you can’t sepearte differnt parts of your life with the one account. My real world friends (what friends you ask!) often don’t know each other and are not often aware of each other. I have different friends for differnt reasons and never the twain shall meet. Why oh why can’t I replicate this online?
And while I get up a head of steam for ranting, I think to the OMG isn’t facebook great this goes double or second life. How can a tool that is so difficult to use and requires a great deal of insider knowledge to use successfully ever me of anything other than a niche product. From some tech people here in the UK, you would think it was about to revolutionise the way we deliver education. Tosh I say!! Bah Humbug!!