Blogs tell all

I came across an interesting article at philly.com about Kara Borden & David Ludwig, the murder/runaway/abduction suspect. It seems that someone there did a little googling and uncovered the blogs of the two teens. While I don't think the blogs themselves are particularly interesting, what is interesting is the implications for future reporting and investigations. With the explosive growth in popularity of sites like myspace, xanga, and livejournal more and more people are giving the world a glimpse of their lives. How long before it's routine for a reported to google people they're writing articles on and pull in info from or provide links to their blogs and profiles?