Any site that doesn't even spell check their home page makes me just a bit concerned about the reliability of their services. If you click on the link to "read about" Paymate in the article you provided you will see in the boxes "accept Paymate for Ebay sales" the word "authorise". Small detail, but important to be meticulous when dealing with $$.
Jane1976 -- These guys have an Australian origin, so it appears they are using the Kings English with "s" for "z" in some words, rather than the spelling and good English we Yanks got.
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