The main Tile related story on my newsfeeds is about a find at Vindolanda:
The figure of 6000 leather boots is quite astounding as well!
Human and animal prints are by far the aspect of tile studies that catch most attention.
I have talks about them before: http://www.archaeologicalceramics.com/blog/animal-prints
so I don’t want to repeat myself too much .
The only unshod human foot print I have seen is one from near St Albans, alongside some fingerprints
Otherwise most are boot prints, and all I've seen are with hobnails ( Cf: