DislikedEurJpy was one of the pairs Clay traded on the original thread. By his rules, one should trade it mostly during the overlap period, from Frankfurt open to Tokyo close. And you could also overlap some before and after if there is decent movement during that time.
I don't see Usd/Jpy mentioned very often. The typical advice for beginners (which would include myself) is to pick a pair and stick to it. It's good advice (and advice I should follow more than I do).
The big exception to this idea of sticking with one pair, I think, comes from looking...Ignored