It did when they first launched here. I dropped them an email and asked if they had plans to allow non-facebook users to use their service, and was politely to

It did when they first launched here. I dropped them an email and asked if they had plans to allow non-facebook users to use their service, and was politely told that they had no plans to do so because the social connections were central to their business. I never gave them a second look to see if that requirement changed.