Congratulations to linkedIn who have achieved one million UK members on their social engineering...I mean, social networking site.
I think LinkedIn will persist and grow. The forthcoming API will enable other companies to tap into the service and I can see the potential for organisations such as Salesforce.com to add LinkedIn functionality or vice-versa. Businesses will also be able to integrate LinkedIn with their own CRM or business development systems. Powerful stuff.
Security and privacy will remain a concern and it would be great to see LinkedIn - or whatever the next, next best thing is - being innovative in addressing this. The opportunity is there...