Same as this game has largely done since the start. Network. Social shells are a lot more prevalent now than they used to be, and with being able to equip two pearls, there's often a lot of overlap between a larger social shell, and event shells. It's especially the case on smaller servers. IE, the social shell I'm in on Leviathan tends to hit max members during busy times, even after having people unequip it from alts/etc. When there are only ~450 characters online, that LS chat reaches pretty far.
I'd assume Asura is similar, just more fragmented.
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