As someone who hires, I would never search someone out on facebook, unless for some reason it was listed on their resume. (I actually had a resume once with a facebook page listed as their web page - in which case I went and looked - I was not impressed.)
Just remember, as a business owner of your own self and business, you should understand that all online presence could work for you and work against you.
Now, on the flip side, I use facebook a lot to keep in touch with a lot of SMs and actors - I do a lot of "work" via facebook - oddly enough.