Green names

[MrBen5]

Why do people come on as new users to insult people when they clearly have another user name? Why do they feel so embarrassed/inadequate to say what they want in their normal name?
(i totally understand those who come on as another name to ask a personal question, so my Q doesnt include you lot)

[wild-bill]

http://performancespares.com.au/images/spanner s.jpg

[ummmm]

Oh c'mon....I know who you are you spanner!!! It's ok...you look mighty fine in green!!! as always