This got me thinking what you think the idea guild sized might be?
From RIFT, My guild that I belong to has about 700 to 1000 total people, but in the evening there are only 40 to 60 people online during the time that I play with the same players all the time. I getting to know them well.
During non peek hours there is about 15 to 20 people are online.
That seems about the right size, it is big enough so that someone is always online 24/7 and are active, but not to big one does not get to know them.
It needs to be a large number to count for all the anti-social or non-active players, but not to big. Also, with that many people, they do little bit of everything in the game: PVE, PVP, Dungeons, crafting, raids, IA's, GH Rifts (PLEASE NOTE: Some of what I listed apply to only to RIFT content, not ESO.)
What do you think of an ideal guild sized?