While BA is the most active forum, it dominance was far out sized in Trending Threads than its relative activity to the other forums. Believe the algorithm resets daily. My theory is the trending page resets early in the new day for the UK (midnight Calif?) (or after 24 hours of first appearing) and the UK posters being predominately BA, as their carrier of choice, got an early head-start on the other forums. So largest forum (but not that huge fraction of FT traffic) and early starter together yielded the results we saw, (BA generally being 50-80% of the trending threads). So the algorithm needed so tweaking, IMO