http://www.youtube.com/watch?v=O9CAPrEG5sM&feature=related

I can’t stand it anymore. My blood boils every time I see them: the five most abused, misused and misspelt words in the English sandwich. Er, language, sorry. OK, here goes . . .

5. its / it’s / its’

Its refers to possession and means “of it”.

It’s is a contracted form of It is or It has.

Its’ is not an English word and means nothing.

Wrong: *Its important to know its’ meaning.

Right: It’s important to k...