Sharing one's thoughts with cute touch, briefly (8)
I believe the answer is:
tweeting
'sharing one's thoughts' is the definition.
(sharing one's thoughts on Twitter)
'with cute touch briefly' is the wordplay.
'with cute' becomes 'twee' (I've seen this before. I am not sure about the 'with' bit.).
'touch' becomes 'tinge' (synonyms).
'briefly' means to remove the last letter.
'tinge' with its final letter removed is 'ting'.
'twee'+'ting'='TWEETING'
(Other definitions for tweeting that I've seen before include "Making a chirping sound on the social network Twitter" , "contacting followers?" .)