I have to admit, I was in a similar mind to Pharisee at first - "but that's not what TB's do", but hey, the game is what you make it. So, I did one of Mandy's postal bugs, it was collecting photos of caching hounds with a picture of Jess.
I took Deefer the dog out for a nice long walk while cache hunting, had a great afternoon and took some pictures of my muddy companion...
Harmless fun, just another way to play and interact with other cachers. As another thread has noted, this whole pastime is too daft if you spend too much time thinking about it