If any of you are feeling a bit queasy, stick with it, because we're entering the final straight with the obligatory eight-legged exposé.
Barry Redwood of Ontario says this kind of thing is a common sight in his repair shop. We'll do the joke for you - yes, this machine was used for web surfing:
Eddie Abbott brings us two more arachnid habitats...
...as Simon Avery reveals what he found inside a PC he'd had running in his loft for a few months in early November. He notes: "Being the only warm thing in the loft, the flies looking for somewhere to hibernate crawled in through the missing backplate..."
That evidently turned out to be a bad move. The spider looks well-fed, though.
I started out thinking "I've seen worse than that", and finished with "holy crap".
What I've learned
It seems that ants are negatively charged - they're all stuck to the positive pin on that capacitor.
And I thought Pratchett made this stuff up!!!