I've not understood why people wanted it to be a social network. That aspect always seemed bizarre to me until it had been true for long enough to stopped being strange. But this doesn't make sense to me either.

I wouldn't load the site at work because I wouldn't want to signal to my employer that I was looking for another job. I very deliberately didn't accept invites from management at my last employer (small company, ~25 people) until I didn't work there anymore. I wouldn't want them to get a notification if I suddenly revised my profile because maybe I'm shopping around for a new job, for example.