I have yet to receive any information from Wotif or Expedia on this one. However, last week I did get a call from Agoda saying they were going to increase their rates and the exact details would be coming through by e-mail in the next week or two.
It seems to me that Expedia are currently charging a whole range of commission rates. I currently only pay 10%, but others are paying 12%, 15% and more. I think that it all depends on you size of operation and I suspect that it is the big boys they are after hammering?