I voted "yes" for letting (at least some) people know; there are just emotional obligations to be met here, in my opinion. I've gotten too much genuine goodwill here to just cut-n-run.

There are a few here that I'd even PM my email to, if they ever felt the desire to get hold of me.

Maybe I'm somewhat codependent here, but I would be rather hurt if some of my friends here just vanished without an explanation or a goodbye!

Mike