Facebook or Myspace?

I just wanted to throw this out there and see what people thought of this...

I don't know if all of you are on Myspace or Facebook, but personally I am. They are two of the most addicting websites on the internet. I find myself spending hours looking up people that I went to high school and college with and staring at their various pictures. It becomes almost an obsessive habit to check constantly for any updates from friends.

What is weird to me is that every once in awhile I come across a business that has a Myspace or a Facebook page. I understand the rationalization of it because the whole purpose behind Myspace and Facebook is to build this huge social network. It allows you access to networking with thousands and thousands of people. Since January 2007, there has been an average of 250,000 new registrations per day on Facebook and it is the 6th most trafficked site in the U.S. Myspace, as of December 2007, had 300 Million accounts and it the 6th most trafficked site in the world.

What I don't understand is that major companies are associating themselves with websites that allow people to post drunken party pictures and everything else that want. For some businesses, I understand that this might be your target market. If you are an author or a music artist and you are trying to get your name out there, these websites allow you to do that relatively easily. But for everyone else, I just don't understand the logic behind it.

So I am interested to hear what you think. Does your business have a Myspace or a Facebook page? If so, do you find it useful? Let me know what you have to say.
Have a great day,
Alex