I'm a member of LH M&M and there are so many mile-promotions, like miles for registering for a newsletter or ordering magazine subscription and thousands of miles for this.

Any similar in BA EC? I don't fly with them often (actually did just once, God bless LAN "sale", lol) so the miles will expire in some years, maybe there will be a chance to get some more within that time, for free?

CC is not a solution as I use one from LO M&M. Car rentals and hotels the same, because my major frequent flyer is M&M.

Looking forward some tips from you.