maybe go get all your facebook info downloaded as one package? there should be an option somewhere in your settings for that. then with all that stuff you need it for saved to your computer, you can delete it – maybe make a status asking all your friends to send you their phone numbers or whatever to keep in touch after. Or that you’re going inactive but leaving the page up and where to contact you
Leaving it inactive might be a good idea. I could go into it and get event dates (to save elsewhere) and leave a post on at the top of my wall saying where to contact me. That way the info the company would be collecting about me would be very minimal (event pageviews and nothing else).