It concerns the M&M credit card, so it probably belongs here (for the life of me I can't find the M&M promotions thread and I'm getting tired of searching for things here because it takes so much time to find old threads).
There is an offer with MilesPay, where you can transform your M&M credit card into something that bills you in miles instead of Euros. Now, I wouldn't dream of using miles to pay for things because the rate, as far I understand over at VFT, is horrendous. It's so bad, even a child of three would reject it. However, just for signing the card up to MilesPay you can earn 500 miles for free (I think). You need to leave the card there until 30th September, then you can remove it. To actually set the card to use miles, you must complete another step, which then gives you a short time frame within which to make the purchase (say, 15 minutes). That would earn you another 500 miles (but I am definitely not completing this step). Anyone else given this a go?

https://www.miles-and-more.com/de/en.../milespay.html