open page diaries

why do people call blogs open page diaries? i mean if you really use your blog as a diarie your crazy. i mean i dont know anyone who puts on their blog "dear diarie,
this morning i got up ate fruit and captain crunch watched boomer rang cartoons and rode my bike to school. after school i did my homework watched transformers and went to bed early. ugh i think my life is soo boring. see you tommorow. sincerely bob." man wouldn't that be boring. ( o o )
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ciao bellas