Probably not a new issue, but technology is lowering boundaries again. Garmin has released a new GPS unit - garmin edge 800 - everything to verbal directions telling you which way to go.

Do you use these things? Have you posted a trail and seen an increase in visitors? Are they litter-bugs or what? Are they trashing your ramp lips and cutting corners? pushing the limit and angering land owners? - in short will or have public GPS route postings benefited or damaged your local trail.