Time for unusually sweet messages (6)
I believe the answer is:
tweets
'messages' is the definition.
(I've seen this before)
'time for unusually sweet' is the wordplay.
'time' becomes 't' (abbreviation).
'for' means one lot of letters go next to another.
'unusually' indicates an anagram.
'sweet' with letters rearranged gives 'weets'.
't'+'weets'='TWEETS'
(Other definitions for tweets that I've seen before include "Short internet messages" , "Social media messages" , "Sends social media comments, information, etc" , "Posts made on Twitter" , "Chirps social media postings" .)