For me, Plaxo appears to be a combination of services like Outlook (Calendar), Facebook (Connections), Twitter (Pulse Stream) etc. It was a simple process to sign up for an account and create a number of events for separate calendars, task lists and contribute a status update. While the exercise has been useful in learning about other free online services available, I think Plaxo would only be of value if I had a network of friends and associates using it to communicate and interact with.
