Here we find an excellent description of what a blog[ger] does, minus the obviously inappropriate or, at the very least, horrendously callous use of the word "proletariat":

One of the things I like about blogging is that there’s no requirement to do a good job – it’s just my ramblings, on my website, covering whatever my fancies might run to. That’s particularly nice in that it gives me somewhere to just whine or ponder about whatever I might like – I’m not obliged to censor myself because my friends or colleagues mightn’t be interested, or because I don’t have any clue what I’m talking about. Blogs are meant to be the ignorant rambling of the proletariat.