Popular place to get data (5)
I believe the answer is:
input
'data' is the definition.
(data put into a system)
'popular place' is the wordplay.
'popular' becomes 'in' ('in' can mean trendy).
'place' becomes 'put' (synonyms).
'in'+'put'='INPUT'
'to get' acts as a link.
(Other definitions for input that I've seen before include "Insertion of data" , "Simple, without artifice" , "Signal supplied to a device" , "Data supplied to computer system" , "contributed information" .)