I fail to understand the actual value-add of this crypto currency. Ok, so we will have "Grams" that will be integrated into Telegram and their users can use. No

I fail to understand the actual value-add of this crypto currency. Ok, so we will have "Grams" that will be integrated into Telegram and their users can use. Now what? What will I be able to do with it? How will "grams" gain value over time ? Who will be mining ?