I wrote an article for Snowshoemag on geocaching: http://snowshoemagazine.com/view_content.cfm?content_id=43. I do think it would be a fun event for families. I wish I had the time to organize one in Colorado.
Great to hear there are others out there! It really makes the hunt even more fun. In fact here is a pic from a first to find I had earlier today! Enjoy
http://img.geocaching.com/cache/log/8e95b9fc-9bd6-4d57-bcb7-a850e10e4439.jpg