I'm adding labels to all my old posts (lil tip for all you new bloggers out there - don't wait until you have 843 posts before you start labelling!).
I never started because the labels looked so bad. Now I've got them all neat, tight and in caps so I have to go through everything I've ever written if I'm ever going to get that label cloud.
It's kinda like therapy, going through four years of your life in that way. It's like a diary with a search function - you don't have to read all the boring shit.
You can expect some old posts revisited.
Halfway through, my most frequently used labels are;