I think it'll be around for a while, some really old threads show up when you google things. Most in the UK call all yarn 'wool', even acrylic or cotton, so older patterns use wool forward instead of yarn forward to denote a yo. I think there's a couple of sites that explain the different UK terms, and Bernat uses them in their patterns I think. But you could also write the 'translation' in your pattern book, on one page or use a sticky note.
sue- knitting heretic