Crazy about a small article at the top of the paper (8*)
I believe the answer is:
Here is my best explanation:
'top of the paper' is the definition.
'masthead' can be an answer for 'top' (masthead is a kind of top). I am not sure about the 'of the paper' bit.
'crazy about a small article at the' is the subsidiary indication.
'crazy' becomes 'mad' ('mad' can be a synonym of 'crazy'**).
'about' indicates putting letters inside.
'a small' becomes 's' (abbreviation - e.g. clothes size).
'article' becomes 'a' (example of the part-of-speech).
'at' says to put letters next to each other (I've seen this in other clues).
'a' put after 'the' is 'thea'.
'mad' going around 'sthea' is 'masthead'.
(Other definitions for masthead that I've seen before include "Newspaper identity", "flag", "Newspaper title", "Title of a newspaper or magazine", "Printed title of newspaper or magazine", "Printed newspaper details", "Highest part of sailing ship", "furthest point from sea", "Title of a newspaper printed at the top of the front page" and "Flag".)