A timely Bruce Schneier reality check; see the full article
These issues are not identical. RealAge is hiding what it does with your data. Google is trying to both assure you that your data is safe and duck any responsibility when it's not. Facebook wants to market a democracy but run a dictatorship. But they all involve trying to deceive the customer.
Cloud computing services like Google Docs, and social networking sites like RealAge and Facebook, bring with them significant privacy and security risks over and above traditional computing models. Unlike data on my own computer, which I can protect to whatever level I believe prudent, I have no control over any of theses sites, nor any real knowledge of how these companies protect my privacy and security. I have to trust them.
This may be fine -- the advantages might very well outweigh the risks -- but users often can't weigh the trade-offs because these companies are going out of their way to hide the risks.