I agree Gorbie. Only a week ago I said something similar:
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I have decided to start using "JW.org" interchangeably with Watchtower Organization, Watchtower Society, etc. for the simple reason that the WT is currently re-branding itself and phasing out the word "Watchtower" more and more. They are even putting up stores with "JW.org" on the side of them now. Not JW, not WT, but that.
Their letters are usually signed:
I predict that in the next five years the word "Watchtower" will not appear anywhere in their new writings, magazines, books, Kingdom Halls, etc.