Quoting from canarybird's profile

"I definately don't like bad manners from young men"

all my life i thought it is definitely and I was defiant till the end

but as per the urbandictionary definately is also used.

definately = Idiot-speak for "definitely". One of the most common moronic misspellings found on the internet."

http://www.urbandictionary.com/define.php?term=definately

I swear i dint write that......