Smart move! You'll probably get the position if it fits what you are looking for. Many fail to research their prospective employers.
On a side note, be sure to use a professional email address in your profiles. Also, don't use a name that you use somewhere else like Match.com or something. All that stuff can be easily backtracked and the employer probably won't have to ask how many children you have or what your dog's name is.
Let's face it, if you're doing the Social Networking scene, there is very little that people don't know about you.