I use the Linux dump program to do backups. I use a set of scripts making the process as unattended as can be. The scripts send me an email with the result so I am informed of the outcome.
Viewing today's email status message in Gmail had a hilarious surpise in it. Look at the ad on the right hand side.
Google thought that the email subject and text here has "Dump" in it, an display an ad about "She dumped me" ... "Get your girl back".