Yes and no. It depends on how you're using it and what your goals are.
Facebook is primarily a consumer to consumer network so there really isn't much place for a business on Facebook, despite their best efforts.
For instance, I promote my personal blog on Facebook and have tremendous success. However, if I tried to talk about my SEO services on Facebook it would pretty much get nowhere. It's not the right audience.
You'll need to determine who your audience is and then see if that audience is friends with you on Facebook to answer this question.