I didn't really pay much attention until this last post Big Deal maybe I can help you with this to calm your fears.
CTN was originally a big vehicle for Neteller. They picked up some of the cost via advertising and also assisted in distribution to their members which was a pretty substantial number.
Recently Neteller has backed off on the advertising of CTN and now just helps with the distribution. The magazine is put together and then sent out a company that does that mailing. what I am getting at is that CTN does not have access to your info from Neteller. That is a totally independant process.
So, you don't need to worry about the "spam" because nobody has the Neteller info except Neteller and it isn't in their interest to sell that info to anyone to use in their marketing because they pretty much have every Sports Book as a client and that would be a huge conflict of interest.
Bottom-line, you won't get anything else from your use of Neteller in the mail except CTN.
MC