Economical according to a report on Twitter (5)

I believe the answer is:

cheep

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'twitter' is the definition.
(I know that twitter is a more specific form of the action cheep)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for cheep that I've seen before include "Make contribution to Twitter" , "Young bird's cry" , "tweet" , "Chirrup" , "Cry of new-born chick" .)

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

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