Whether you think it is just for kids or not, Facebook is a tremendous and need I mention FREE tool to market your business. The chances are pretty high as well that your target market is there already, now you need to position yourself in from of them.
You don’t necessarily need to have a Facebook account for your business although I recommended it, you could just purchase advertising on the website itself. You can pay by the number of impressions your ad gets or by the action, like a form being filled out. The idea is to tailor the campaign so that only your target audience is completing the give action.
Hopefully this will get you thinking a little. At the least visit Facebook and look up competitors in your industry and see what they are doing.