Putting forward current content of messaging on-line (8)
I believe the answer is:
positing
'putting' is the definition.
(positing is a kind of putting)
'forward current content of messaging on-line' is the wordplay.
I cannot quite see how this works, but
'current' could be 'in' ('in' can mean current or trendy) and 'in' is found within the answer.
'of' could be 'o' and 'o' is found in the answer.
'content' could be 'ps' (PS is an example) and 'ps' is located in the remaining letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for positing that I've seen before include "Postulating" , "assuming" .)