Popular place getting contribution (5)
I believe the answer is:
input
'contribution' is the definition.
(I've seen this before)
'popular place getting' is the wordplay.
'popular' becomes 'in'.
'place' becomes 'put' ('put' can be a synonym of 'place'**).
'getting' means one lot of letters go next to another.
'in'+'put'='INPUT'
(Other definitions for input that I've seen before include "Contribution; enter (data)" , "Data supplied to computer system" , "Signal supplied to a device" , "Data contributed" , "data-feed" .)