On first glance
Blogging could be quite therapeutic for solo workers but you always have to bear in mind that you don't know who is reading it (I sense a Spooks-style conspiracy theory coming....) and you could end up in trouble.
I was offered a day moonlighting in my old job (teaching) today. It's kinda handy to do these torture (ahem) supply days. Money is good for six hours easy labour, unless you get six hours of what is euphemistically called "displaced PE classes". These are a nightmare. Picture a room of twenty teenage boys expecting a game of footie only to be stuck in a lecture theatre copying (yes, you read that correctly) paragraphs on "Sports in Ancient Greece" onto a lined bit of paper that is chucked in the bin as soon as their teacher returns from the sick/inservice course/meeting. This is not fiction; this was what happened last term to me. Now I can win round most kids but not displaced PE pupils.
If I have to "tent-make" nowadays I hold out for a subject specific supply day (i.e. where you actually teach what you are qualified in) Makes sense, don't you think?
And so I turned down the chance to make some cash today.
And my God will meet all your needs according to his glorious riches in Christ Jesus.