sarcasm? in text?

so yeah, almost every expression, has an emoticon...like...
To express laughter, :D
To express Sadness, :[, :(
To express shock, :O
To express Anger or discontent, :/, >:[

since sarcasm is soooo hard to spot in text, a sentence could be mistaken as something offending, while it was meant to be a joke...and so that sarcasm finally has equal rights to emoticon land...

a company has created...



THE SARCMARK!

The sarcmark is available for windows XP, Vista and also 7,
where you have to pay $1.99,
and after downloading you can just use "." and the sarcmark will appear...epic isn't it?

XD - To Denote That The Laughter Is Killing You

or

that you are laughing while sleeping or you're just dead and laughing.