If you've got kids - you may want to think twice.
You share the kids, which means you'll have to deal with her fury EVERY SINGLE TIME you pick up and drop off - you want them to see that? Much worse - know why?
What if they find them online at a later date? You wanna be the one to explain to them what you did to thier mom? Ehhhhh
Not to mention she could throw a lawsuit at you...she may not win - but it'll hit you in the wallet and make things infinetly worse.
We're all tempted with revenge every now and then...but as they say - the Internet is written in ink.