[quote=Tigerfort]
I can’t find the reference now, but as I recall* it came up a couple of years back and someone at FBG said that it’s basically a real-world computational constraint. Larger acquaintance lists cause problems because they become rapidly more demanding (ie allowing each list to have twice as many entries causes it to consume more than twice the resources).[/quote]
It was so bad that my social actions broke completely. All I ever got was a blank screen. Just because I had too many acquaintances and processing the list (with requirements) took too long. I had to contact support, which ended up purging my list (by removing contacts who were incative for a long time)