Whoa. In the current PC Forum session, Tim Koogle of Plaxo is taking a beating over lack of transparency, privacy, and the intrusiveness of the frequent messages from the service. Here's why I dislike Plaxo. The first time I received a message from a friend asking me to update my contact information, I did it. A couple of days later, I received another message asking me to add the same information for another friend. I did that too. When the messages continued coming in, I just stopped. I'm happy to provide contact information directly to my friends. I just don't want (trust) an intermediary, and it's much easier to send my friends an e-mail with my current contact information in my sig file.

ADD: See comment from Plaxo Privacy Officer below. They're taking the comments seriously. That's a good thing! and I think I'll give Plaxo another look.

LATER ADD: Plaxo is still awful.