For better of for worse, weblogs have captured the attention of people. The information in one is ordered by time. Think of stacking a new plate on top of a pile of plates. Think of writing on a paper towl stream, problem is all this time ordered information is harder to retrieve. Think of cows mooing on a subject and then mooing on another subject. (Thanks to KathrynKramer? and SunirShah? for the visuals)
Additionally, I do not use the word blog very often, I learned early on that it is an ugly word and hurts my ears and eyes. Weblog rolls better. Still stuck with “bloggers” - but really doesn’t this sound like a really gross word?