This is a case-insensitive regex search for strings with 3-4 letters in them.
What does this mean:
Just another /[a-z]{3,4}/i hacker
EDIT: Ah, got it (I think). It's referring to being a polymath hacker: "Just another vim hacker", "Just another perl hacker", "Just another Unix hacker", etc.
But he is not a hacker of any of the following?
OS X
Linux
Emacs
C++
C
Python
Sh
Haskell
Go
Network
Computer
Prolog
Scheme
The 3,4 seems so limiting that it kind of vitiates the witty/cute aspect of the tagline...
(I know that Scheme is not the same as Lisp, and that a language is not the same as its compiler; but would you have "Just another .* hacker"? :-) )
(Also, I can't remember if 'ogle' is actually a tool in the Go language toolkit, although I seem to remember someone saying that it should be. Googling 'go ogle' doesn't have much luck, since Google thinks it knows what I really meant.)