Down the years, whenever I've suspected a poster to be a 'PR plant', or suchlike, I tend to go back and look at their first post(s) on the forum to see if there was any ulterior motive for joining the forum. It can sometimes give clues as to where said poster might be coming from.
Anyway, I've no idea where Tom28 fits on the ITK/plant scale, and have no desire to judge - indeed, I'm rather enjoying his posts - but FWIW, this was his first post on the forum back in 2008...