Sweet Edward posted to followers (7)
I believe the answer is:
tweeted
'posted to followers' is the definition.
I can't judge whether this defines the answer.
'sweet edward' is the wordplay.
'sweet' becomes 'twee' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'edward' becomes 'ted'.
'twee'+'ted'='TWEETED'
Can you help me to learn more?
(Other definitions for tweeted that I've seen before include "Made a posting" , "used social media?" .)