Why Does It Say Guest????

Alot of times i see people show up as guest on the forum, mostly i think connor and like even sometimes john i kinda struggle to figure it out but the someone says their name or somehting so i guess other people can see its them but to me it just say guess why is it doing this?

its Darkv2k and connor, they appear as guest because they have been removed from the members list (banned from powerscape for breaking rules)

Yes, there past posts have been changed into Guest's

oh alright thanx guys!!!!!!