Network experts dispersed arbitrarily without media boss (7)

I believe the answer is:

spiders

I'm a little stuck... Click here to teach me more about this clue!

But I can't explain it at all! Could you help me understand?

(Other definitions for spiders that I've seen before include "Predators on the web" , "Insects; rests" , "Arachnids" , "14 [BOWIE] 's band from 26 [MARS]" , "Web weavers" .)

I've seen this clue in the Sydney Morning Herald.

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