Many companies have similar clauses. Mandatory arbitration, mandatory mediation, etc.
Apparently classmates.com doesn't, or at least didn't. I recently got an email stating that I was entitled to a settlement from a class action suit against said website, to the tune of $5.00... Show me the money!
And as far as SONY adding this clause to their user agreement, it's more shocking to me that it wasn't there from the get-go.
@ The Terror of Death. As much as you may want this to be the the proverbial straw that will send Microsoft to the top of the heap, think about some of the far more creepy things that Microsoft
already has in place in their EULA... Wait, you
did read the EULA when you agreed, right?