Similar to the weblog, the Japanese have a concept called Zuihitsu, which means something close to "following the brush". It is a reference to writing one's mind as thoughts come to it, perhaps best described in English as "miscellany" or "stream of thought" writing.
Write as if you are dying. -- Annie Dillard
A number of writers and actors instinctively or actively use a technique which has some features overlapping those of Zuihitsu.
Zuihitsu has some close parallels to the mindset used in the creation of a Chinese portrait.
Zuihitsu is very much in line with the Wiki mindset
Zuihitsu as a lifestyle is My Zuihitsu.