Plaxo is I think a sad story, it started as an ambitious service for all office outlook users as a way to synch your business contacts back in 2002 if I remember correctly. Then once the social networking services hype got up to speed, Plaxo became a social networking site with a lot of promise. But with limitations, lack of access to info, screwed up (I think) user interface, and very little has happened even after Comcast acquired Plaxo, I see no future in using Plaxo, I think it is a service that is also rude to users;
Why should I as a user receive hundreds of invitations to get connected by people and I cannot view them (get the warning too many requests, you are too close to the limit 1000, please remove some so you can accept...) but on top of that Plaxo suggests I should connect since there are 5100+ people that I according to Plaxo know. There is no logic to it... to me it seems like if I have too many connections, It should not even be possible for other users to send me a request to connect, they should simply get a message that I have reached Plaxo's limit and that is it!