An email address epitomizes the individuality of the internet user.  Therefore when a user
chooses a racist email address it shows their dedication to hate.  The  following data is
from a search at http://www.bigfoot.com using various keywords.  (Although it was
conducted using bigfoot it includes a plethora of different email hosts.)

Aryan           Hitler             Black Panther      kkk
28 results      227 results      20 results               98 results

Nazi        Grandmaster       Skinhead
32           9 results               10 results
 
 

A sampling of racist email addresses
(The part after the @ was omitted to preserve anonymity and to
avert redundancy, only a small sample of the returns is shown.)
 

adolf.hitler@
always_white@
aryan@
aryanworld@
aryan20994@
LADAN.ARYAN@
aryanism4christ@
azioneskinhead@
blackpan@
black.panther@
crimsondragon55@
das_fuhrer@
fuhrer@
gijew@
hangingnigg@
hate2000@
hatejews@
Hitler@
jointhekkk@
killcripples@
kkk@
knightkkk@
nazilover@
nazi_skinhead@
national_front@
naziparty@
noblacks@
skingirl@
skinhead@
ssiegheil@
WannabeSkinhead@
whiteworld@