Does conversational marketing work?
Do you need a Facebook Business Page?
Maybe. That's really up to you. Here's what I can tell you. I was leading the Facebook discussion (with Heather Elias!) at ReBarCamp/San Francisco and Sandra stood up and said she had great success with her Facebook Page. The overcrowded room moved on in conversation about many more things "facebook" and it wasn't until the next day that I was able to track her down again for this quick interview.
If you want a custom Facebook Business Page here's a few excellent examples: