Request user-generated content (8)
I believe the answer is:
pleasure
'content' is the definition.
(thesaurus)
'request user-generated' is the wordplay.
'request' becomes 'plea' (plea is a kind of request).
'generated' indicates an anagram.
'user' with letters rearranged gives 'sure'.
'plea'+'sure'='PLEASURE'
(Other definitions for pleasure that I've seen before include "Happy satisfaction" , "Delectation, delight" , "diversion" , "Feeling of enjoyment or satisfaction" , "amusement" .)