@Harold

I think that you have an excellent point, and indeed I would extend it - so many of the sites you allude to are less than predictable in what they will post or display over time.

From the perspective of having my key content where I want it, and in a place that can always be associated with "me", I was inspired by your post to make a few changes to my personal setup:

1) I've stopped auto-posting to Facebook and LinkedIn. I still use both sites but for a controlled subset of my online activities for which they are a good fit.
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2) I've installed the necessary plugins to aggregate my "Lifestream" on my own site. Although I still have Friendfeed, that is more as a backup rather than a key "point of presence".

Oh yes, and I like Doug Belshaw's suggested rename, or perhaps the "Open Learner Manifesto" ?