I'm talking about the name of the popular internet photograph service. I guess the first part of the word (insta) means instant, but I couldn't figure out what it means when it's colligated with gram.
Comes from "Telegram". The answer is on their About page:
When we were kids we loved playing around with cameras -- we loved how all the old Polaroid cameras marketed themselves as “instant” (something we take for granted today). We also felt that the snapshots people were taking were kind of like telegrams in that they got sent over the wire to others -- so we figured why not combine the two?