Dr Geof is the writer and artist behind such internet phenomena as The Island of Doctor Geof,The First Tea Company and Fetishman.
At London Film and Comic Con, he told me that being at such conventions makes him realise how much people his work. He said that, never mind how much he loves it, that is what makes doing it really worthwhile.
Source: http://www.islandofdoctorgeof.co.uk/