newsticker-hide-old-items-in-echo-area

newsticker-hide-old-items-in-echo-area is a variable defined in `newst-ticker.el'.
Its value is

t

Documentation:
Decides whether to show only the newest news items in the ticker.
If t the echo area will show only new items, i.e. only items which have
been added between the last two retrievals.

You can customize this variable.