I use run keeper to log my miles. Every run it updates and posts the run to FB. I like my family to see that I'm being active and hope that perhaps it stimulates them to be the same.
A friend told me I should be using "charity miles". I just checked out this video and I'm going to do it. cliffelam seems like you could feed a small town with the money you'd raise from just doing what you already are doing.
Any of you already using this?