Most Blogs have a photograph in their sidebar: mostly, though not exclusively, of the author.
Readers of Gardeners World Magazine will notice that the (very knowledgeable) editor, Adam Pasco features a lot. Photographs of Adam dibbing, Adam composting, Adam tweaking his greenhouse, Adam mowing etc etc.
In his honour we have established the Adam Pasco Award For Most Interesting Self-Portrait on a gardening website or Blog.
The Judges are not necessarily looking for beauty but for originality.