Footprints left in digital space is crazy! That is one way to use a metaphor with my students. I believe it will be!
I first realized that I could be googled about 10 years ago when I held a program director/volunteer network coordinator job.  I worked for a non-profit and didn't think that I would be put out onto the web.  But I was! I was a resource contact for our organization,, Indiana Foster Care and Adoption Association.  I was a little creepy at first because I realized I had even more people I didn't know who know who knew who I was!!  This will be a great way to introduce to my students that just like in the physical world what you say is put out there for all to hear/read and there is no taking it back!