"...nobody knows anything of substance about him. This person doesn’t seem to offer much value..."
I know of a few poster children like this in social media. In all cases, I'd guess they mistakenly believe their reputation is growing in a positive direction ("what a great networker!") when in reality it's just the opposite.
Great points Max, especially in this era where employment has a very different definition now than one or two generations ago. From the career management angle, Penelope Trunk (http://blog.penelopetrunk.com/) writes some fantastic stuff. I'm hoping that we'll soon have more than 20 blogs to choose from for the top 20 and that it won't take a generation...
Funny, I was just up there on vacation last weekend! Would recommend a hike up to Parc Mont-Royal - great views of the city. Would recommend against most restaurants on Rue Crescent - overpriced and poor quality. Have fun!