What is the role of image in the weblog?
The traditional photo web journal, pioneered by Dan Bricklin, includes photographs as illustrations. You went to a wedding? Put some wedding shots in your weblog. You went to Paris? Why not get the Eiffel Tower. (See below)
That's fine for occasional images. But what do you do if you'd like images all the time? And what do you do when the topics you want to discuss don't lend themselves to illustration.
McCloud observes, in Understanding Comics, that in comics the words and images are free to support each other or to move independently. When they dance apart, their relationship may be immediately obvious, or it may be obscure at first, to be clarified gradually in time.