I messed up on this today.. so thought I would pass it along...
 

It's vs. Its

It's is a contraction for it is or it has.

Its is a possessive pronoun meaning, more or less, of it or belonging to it.

And there is absolutely, positively, no such word as its'.

A simple test
If you can replace it[']s in your sentence with it is or it has, then your word is it's; otherwise, your word is its.

Another test
Its is the neuter version of his and her. Try plugging her into your sentence where you think its belongs. If the sentence still works grammatically (if not logically) then your word is indeed its.

Examples
It's been good to know you. Contraction: it has
It's a bird! It's a plane! Contraction: it is

The dodo bird is known for its inability to fly. Possessive pronoun: its inability = the dodo bird's inability

http://garyes.stormloader.com/its.html

lmao

It drives me crazy when people do that..... worse though is when someone uses their, they're and there wrong... that one makes me nuts and my husband does it all the time when he writes or types. :1orglaugh

Your right ...

What if someone's last name is "Its." Wouldn't the possessive form be Its'?

That is Larry Its' dildo.

I see what you did thur

a name is not a word, however, a word can be a name.

http://dictionary.reference.com/browse/name

Name
-noun
1. a word or a combination of words by which a person, place, or thing, a body or class, or any object of thought is designated, called, or known.

He might be referring to "proper names".

It's Barry Its' dildo and its name is its' jr.

I'm just busting toejam's balls. I agree with him 100%.

It's a shame!

Its' could exist if there was someone called bob its for example:

Who's is this giant black dildo?

It's Bob Its' giant black dildo!

Its' isn't a word though obviously but someone's name, which if it ends in an "s" would have the ' after the s.

Like jules'

your VS you're
their VS they're VS there

Its I see what you did THEIR.

why ya gotta be bustin' my balls here?

so how was it to fail grade school?

No, It's I see what you did there!

It's simple, if it is, it's it's.

If it's not it's its.

If they are doing something, then it's they're.
If they're doing something in a place they're doing it there.
And if they own what they're talking about then it's their's

Here's one that should cover all of the above:

The car isn't working, Its battery is flat. So It's in need of a new one. They're going to take their car over there to the garage to get it fixed.

boing flip