One person (two SNs) made it from “Acquaintances” to “Friends”; three people in the opposite direction; two people (4 SNs) plus countless inactive/archaic SNs have been removed. :D
Stats over my 8 always-on SNs, counting duplicates: 34 SNs in “Friends,” 114 in “Acquaintances,” and 83 in various groups that are probably not meaningful to any of the readers of my LJ.