Robert Scoble just wrote a post that says his Facebook usage has been going down and he asks Is Facebook doomed?

On the other hand, I did some research of my own using comScore MyMetrix and was able to see that Facebook and MySpace usage is down for home usage and at universities, but NOT AT WORK - Facebook Traffic is leveling off, at other Social Networks too - are people losing interest?

But like I said over at The Analytics Guru - Usage of Facebook and MySpace is sharply UP at work! This comes from my own data pull right out of comScore:

comScore Trend Report - 1 year - usage of MySpace, Facebook, LinkedIn at WORK

So while overall usage is down - as reported in the US and UK (according to comScore) the use of Social Networks is UP, according to comScore - for use in your carrier.