Depends on the person. Some people kick and scream about how it's inaccurate, full of fake profiles, and has outdated school information. They obviously see no benefit. Some people know how to look past that and might actually enjoy looking at trends and dates and comments and movement and also known how to not accept everything they see as fact. Sure, some people just freak out and take it too seriously. In that sense, it doesn't help.
On an elementary level, It's a quick way to see stats and school lists of users here who like to solicit advice without having to repeat it all over different threads.
I'm assuming you are asking sincerely and not one of those who falls under my first comment.