Yes I've just received an email from Amazon with the message "Peter would like to know how many flash guns can you control from this unit ?" referring to a YongNuo YN-622N-TX i-TTL LCD wireless flash controller
*"Never answer a survey or market research or "review" about anything...."
Why on earth not?*
Because the moment you do, especially on the phone, it just gives 'them' Carte Blanche to call you even more. Real Market Research organisations aren't bound by the TPS rules and tell you so, and the number of cold calls I get asking me to do a survey far exceed any other type. I just tell them I don't do surveys but still they call.