Poem succeeded online? (6)
I believe the answer is:
sonnet
'poem' is the definition.
(type of poem)
'succeeded online?' is the wordplay.
I cannot quite see how this works, but
'succeeded' could be 's' (genealogical abbreviation) and 's' is found in the answer.
'online?' could be 'on' ('on' can be similar in meaning to 'online') and 'on' is found in the answer.
The remaining letters 'net' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sonnet that I've seen before include "Poem of fourteen lines" , "14-line verse" , "Fourteen-lined poem" , "Sent on the verse form" , "Fourteen-line poem" .)