What?: Virtual Banking is banned in Second Life?

I was skimming through the web again after referencing some of the latest Web 2.0 news.
When i went to TechCrunch homepage, I saw Second Life is going to ban virtual banking within its world, effective on Jan 22, 2008.

Gosh! What's that?
I could not believe that Second Life is getting into the organic growth of the virtual world.
I am not sure whether the underlying reason is really about the a few complaints from the users. Or Second Life is having some other plan for this big pie?
hard to tell... but there is definitely something fishy here!