A few days ago, I got this email from the Wuala team:
We have been working hard to improve the underlying storage system of Wuala. This improvement will be included for the first time in the next Wuala update, which is coming later this week.
While this change will bring many nice improvements, it also means that we are discontinuing the “trade storage” feature, which was a very hard decision for us to make.
… blah blah blah
So there you have it, everything that made wuala great is no more. Now it seems that Wuala is just another cloud storage provider. Sad