My blog makes me sad, most often when I realize that I did most of the writing on it while drinking nothing stronger than unsweetened iced tea.
There are some things I'd do if I started it all over again:
1) Stick to one character, and the other player characters she interacted with. I didn't really have a need to flesh out any NPCs. Or have NPCs. No NPCs would mean no NPCs that I'd convert to player characters, and then be tempted to blog about their adventures, so on and so forth.
2) Keep the historical, system and technology notes in their original form (e.g. bullet points jotted on a steno pad), and off the damn screen. The blog was supposed to be a memory aid, not a novel in search of a plot.
3) Write an occasional OOC post. On second thought, no, I wouldn't do that.