Preserving those Frequent Flyer Miles

Q. I'm not a frequent flyer so I don't know how these miles work. I understand that if I don't use them then they could expire, and I'd hate to lose them before I even have enough to put towards a trip. I thought I read somewhere that you can do something to keep those miles from expiring. Any idea?

A. Yes, we have just the thing! Check out this blog post on the subject.