I remember years ago having ArcInfo Workstation send emails when it was finished processing and I’ve always thought the next logical step was having it send a text message to my cell phone. Rafa Gutierrez looked at Twitter for alerts and posted instructions as to how to get your ArcMap Model to send you a tweet when it is finished running. I’d probably set up a separate private Twitter account so that people can’t see what I’m doing or that I’d spam followers with my overlay analysis.
Letting ArcMap send you tweets