The short story is that Matt Carmichael has worked with Poi dog Pondering for the last 30 years, documenting as many of their shows as possible. The longer story, which will explain why he's called Webboy, can be found in his post, "Meeting Frank Orrall (and all the rest of the Poi Dogs)"

Matt has, of course, shot other bands as well. You can see his broader portfolio at rocknroll.net