Here's a hint: If there's something you don't want prospective employers to know, like how you got fired for publicly badmouthing your bosses, don't mention it on your blog, especially not in ways that clearly underline how you blame them for your own mistakes. And what were you doing accessing your blog on your work computer, anyhow? Always assume that your workstation is being monitored by the IT department, and act accordingly.
You can click over for details, but really, it's the same old story we keep hearing. Why does it still amaze me that common sense doesn't appear to be all that common among bloggers?