Re: Another solution
Certainly don't host your content on them.
Host it somewhere else under your control and link it in, then you never lose anything but exposure.
All the companies I know that do social networking post to one place that is sucked in via RSS to all their Facebook, Twitter, etc. and usually just links with shortlink to their "official" website.
That way you can be "removed" but not silenced.
Biting the hand that feeds IT
