I have a real lack of creativity with online 
names.  My first email account was created by the 
university waaaay back in 1992, and they just 
used my last name.  The next account I tried to 
get, my last name was taken so I added my first 
initial.  Just as well, because when I later got 
a job, the company emails used the same formula 
(first initial, last name).  So I just kept using 
the same thing.  All my login ids for everything 
are the same except for a couple of things like 
nytimes and aim, where it was already taken, 
probably by a cousin or uncle of mine, so I added 
a "42" at the end.  There are only three sites 
where I have accounts with a truly different 
login, and two of those three are extra accounts 
where I have a primary account with my usual id.  
I even used it for my website when I finally got 
my own domain.  I've often thought of trying to 
come up with something more fun, but everyone 
already knows me by my current id, so I figure 
it's not worth it.