Facebook and Twitter etc do end up hampering journalist (6,5)

I believe the answer is:

social media

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'facebook and twitter etc' is the definition.
I can't tell whether this definition defines the answer.

'do end up hampering journalist' is the wordplay.
'do' becomes 'social' (I've seen this before).
'end up' becomes 'mia' (I've seen this in other clues).
'hampering' means one lot of letters goes inside another (hamper can mean to obstruct or restrain).
'journalist' becomes 'ed' (short for editor).
'mia' enclosing 'ed' is 'media'.
'social'+'media'='SOCIAL MEDIA'

Can you help me to learn more?

(Other definitions for social media that I've seen before include "Popular communications channels" , "Apps used for networking" .)

I've seen this clue in The Guardian.

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