Get the messages frequently as a GP. I regularly have people fly in to see me; when our corporate travel agency books the tickets, they use my profile. The automated US system calls my cell phone to let me know if there are delays or cancellations for those people. Sometimes the automated pronunciation of the name of the traveller is pretty humorous.
It also called me once to tell me that my flight was delayed 1,310 minutes. It seems to have issues if flights are delayed past midnight...the flight was actually delayed 130 minutes (1440-1310=130). Maybe it's related to the website calling midnight 12PM....(on the flight status screen at least).