what does Imao mean?

LMAO means laugh my a** off. Internet language.

I know what LMAO is... but *I*MAO?? ... "In my ***'s opion"? :D ::gets hit by rocks::

The I (or i) = L (or l) in internet language.

And similarly, ROFLMAO is also commonly used, meaning something along the lines of "Rolling on the floor laughing my a** off". ;)

I just learned today that L33t means cool. Why? Some obscure reason.

Still haven't figured out what k3wld00dz means (I get the dudes part).

l33t is a slur of 'elite'. So actually it doesn't mean cool, it means elite. Which has me stumped as there is no way in which I can possibly see users of l33t speak as elite or superior to those who don't.
The other term you mention I guess means cool dudes. Spelling cool as kewl, another 'elite' invention. Bah. :D

If you want some good advice, stay away from people who spell like that, and most of all don't start using it yourself. It will only make you look like a damn fool who can't even spell proper English and it's such a drag having to spell |_ | |< 3 this when you can just write like this..... ;) [img]tongue.gif[/img]

Indeed... 1337 is for wussies.
Now the really cool people only conversate in binary. [img]graemlins/showoff.gif[/img] [img]tongue.gif[/img]

01001001011001100010000001111001011011110111010100 10000001100001011100100110010100100000011000010110 00100110110001100101001000000111010001101111001000 000111001001100101011000010110 01000010000001110100011010000110100101110011001011 00001000000110001101101111011011100111001101101001 01100100011001010111001000100000011110010110111101 110101011100100111001101100101 01101100011001100010000001101111011011100110010100 10000001101111011001100010000001110100011010000110 01010010000001100011011011110110111101101100001000 000110011101110101011110010111 00110010111000000000

and
01001001001000000111001001100101011000010110110001 10110001111001001000000110110101100101011000010110 11100010000001110100011010000110000101110100001000 010010000000111010010001000000 0000
as well. [img]tongue.gif[/img]

(for the illiterate: use this handy tool to translate binary to the uncool english language. :D )

Not only that, it makes you look like a WANNABE hacker (with emphasis on WANNABE). ;)

Groj: [img]tongue.gif[/img]
Your stupid binary code messed up the thread... now how uncool is that? :D [img]graemlins/nono.gif[/img]

Depends on your definition of "cool", of course. [img]graemlins/showoff.gif[/img]