Blogger Bill (6)
I believe the answer is:
poster
I believe this clue is a double definition.
'blogger' is the first definition.
(a blogger is someone who 'posts' online)
'bill' is the second definition.
('poster' can be a synonym of 'bill')
(Other definitions for poster that I've seen before include "Bill or placard" , "Large decorative printed picture" , "Large sheet of paper advertising something" , "Town near Glasgow" , "Person who sends" .)