Some of our forum icons fall short of actually indicating what they even mean, IMO.

Which announcement is a Global announcement? 

Which topics are stickied?

I propose we use some better icons.

A Globe for Global announcements.

A Bullhorn for Announcements

A Pin for stickies (lets face it the modern day nomenclature for a sticky is a pinned topic)

It could even be helpful to rename (textually) "Stickied" topics to "Pinned" topics?