I know escorts who have in their phones 50 contacts per city... before going to a place they prepare a message: "Hey I'm going to be back in XXX from August 10th to August 14th", they copy it and they send it to all of their contacts in that city, some they might just use talk to voice and click on each contact.
Do you ever get folks from your contact list saying they never got your message about your tip to their town last month?