Pigs soiled ground? It's hardly earth-shattering news (4,6)

I believe the answer is:

idle gossip

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'hardly earth-shattering news' is the definition.
I know nothing about this answer so I can't tell whether this works.

'pigs soiled ground?' is the wordplay.
'ground?' indicates anagramming the letters ('grind' the letters into a new form).
'pigs'+'soiled'='pigssoiled'
'pigssoiled' anagrammed gives 'IDLE GOSSIP'.

'it's' is the link.

Can you help me to learn more?

(Another definition for idle gossip that I've seen is " Conversation".)

I've seen this clue in The Guardian.

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