Had a client whose soon-to-be-ex-husband used her email address and phone number to sign her up for every bank, loan, religious, mental illness site he could think of. She was bombarded by people contacting her about her interest in their product/services.
He even put out ads for sex partners on Craigslist with her information. The kicker is that she actually went out with a guy who contacted her!
If I learned anything being a divorce attorney (I no longer practice), it was that if the opposing party sounded like a nutcase, I would soon see the nutcase come out of my own client. Normal people don't just accidentally marry crazies (not often)!