Only just noticed this as it's not something I look at too often, but it seems a bunch of characters seen around June 12-13th got given new entries instead of being attached to their existing entries.
http://www.warcraftrealms.com/guilds/4053767 is my own guild, note 3x Kezzik Orc Shaman (ignore the goblin of the same name; he racechanged a couple of years back), 2x Ruire, 2x Sagart, 2x Tairbh - now the last 3 are my own characters so I know for sure nothing changed about them, but the extra copies are all from the same date range, so I'm assuming site glitch.
Suspect this was a side effect of the various server glitches around the time, but if there's that many instances in my own tiny guild, I'd guess there's a fair few elsewhere too.
Duplicate characters
Possibly related to the problem I had 10 day earlier --> http://www.warcraftrealms.com/forum/vie ... php?t=5027
Doing census mainly on Draenor; Raluf - Nimsay - Lusmo - Quixx - Sosyan - Garthog - Trubin - Zalistra - Zesmi and Djaang