Pebble left by #NTUROCK, Nottingham

I love finding these things, and it's particularly pleasurable to do so during the insane times we live in. This lovely rock (or pebble) is very different to the one I found in Ashford, Kent, which I now think had been left by truckers from the Preston area. Although I now live in the Manchester area, my partner and I (for personal reasons) frequently return to Nottingham, where I was born and lived (on and off) for many years. This pebble I found between the paws of the left lion at the Council House (or right lion if looking at it from the Council House perspective). It says 'hang in there', and on the reverse is says 'Post a pic using #nturock and rehide me.' As a Nottingham born guy, should I hide it in Nottingham, or as a reluctant Mancunian, should I release it there? (My Twitter account is impossibly compromised).

Pebbleart Preston at Ashford, Kent

This delightful handpainted pebble originates from Pebbleart Preston, a Facebook site. I found it on a small car park bollard outside the Premier Inn North/Woolpack pub in Ashford, Kent. At first I didn't know what to do with it exactly, then went online for Pebbleart Preston, and discovered that it runs on similar lines to Bookcrossing, only without all the tracking: it seems that the only rule for these sites (and there are a few more apart from Preston) is just post on the appropriate site and either keep or leave somewhere else. Love it, great idea. I'd love to know the history of it.