Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, "and what is the use of a book," thought Alice, "without pictures or conversations?" [Lewis Carroll] And what is the use of a weblog, etc?
There is a lot of good energy and momentum happening out in weblog-land. But digital cameras are cheap to buy and easy to use, and the world is well-supplied with disk space and bandwidth, so why are there so many boring-strip-of-grey-text blogs out there? I don't use any of the popular blogging tools, but if they don't already make it easy to paste in pictures, they should. I often see "click here for my pictures" but one shouldn't have to, always.
As for conversations... I think blogs are doing very well. I propose that we define a weblog as a conversation between a person and the world.