Hooray!
Bitcoin payments are now accepted at wuala.com on a dedicated page:
http://www.wuala.com/bitcoinThey'll improve the purchase process once there is some volume (i.e. they are tired of manually processing the payments

). I think they are also going to publish a bitcoin post on their blog.
Disclaimer: I work for Wuala, I hope that is no problem for the rewards. My Bitcoin address: 1PL3NcnckFgseafeRbGhUYbSGeWV7vMj1r
That's great. However, as said in the OP Bitcoin has to be mentioned as a payment method here:
Which payment options are supported?
All payments are performed using PayPal's secure online transaction system. PayPal accepts all credit cards (Visa, MasterCard, American Express, Discover). A PayPal account is not needed.
How else would people know about it other than by reading this thread? Unless I missed something?