Web loggers, or bloggers for short, are that new breed of armchair documentarian, chronicling the day’s events — politics, sports, music, arts, family, dating life, anything — on Web sites that are updated daily, or several times a week. But unlike a newspaper Web site, which brings a new front page with new stories each day, yesterday’s blog musings generally aren’t wiped out by the next day’s postings. Scroll down, and see what was on the blogger’s mind yesterday, last week and last month. —Pittsburgh goes blog wild (Post-Gazette)