...
GermanGiant
Great question, but I doubt that anyone could really answer that.
But, one thing to be looking for is whether or not SharedCoin use (say as a percentage of BTC transacted) goes up.
It looks like it would be close to impossible to assess how much
bitmixer.io is being used. I have no idea.
Perhaps SharedCoin is doing some serious testing.
The bitcoin is perhaps moved a little around to see if there new implementation work as it shoud.