There is never just one thing that leads to success for anyone. I feel it always a combination of passion, dedication, hard work, and being in the right place at the right time.
People are just obsessed with other people's lives. I don't know whether it's kind of a way to escape their own, or something to follow... I really couldn't tell you.
Blogging is a great way to show your talents and interests to prospective employers, while adding an edge to your resume. If you blog consistently it shows your dedication, passions and creativity - all of which are key attributes employers look for in job candidates.