I have started this thread for people who trade MM CFDs & Forex and believe they are getting swept with dodgy prices. Personally I have not seen any evidence that that is what happens but If anyone would like to post a chart in here of the prices that your provider is quoting you I will check it against the Futures.
I can check most Asian, European and all US indexes and most Forex and Commodities. If you can do it within a week it will be a lot easier then I will not have to reload historical tick data.
I have been PMed about this and I think the big problem for MM traders is that they aren't seeing the underlying market so its easy to be a bit sceptical when you get hit.