Users should be able to automatically hide or auto-collapse (into poster + Subject or notice number) notices that have user defined #tags?
Like how AndStatus allows -- i.e. noone wants to see #dickpics, except for the handful that do....
And, if possible, this should carry over to applications.
Maybe it would be best if there's another filter for the timeline called "hidden posts" that by default is unchecked. This way there's an easy way to show those if a user is ever curious.
"Hidden posts" could link to that spot in the users setting.
Hover over or right clicking a tag could present "hide this tag", "follow this tag", and "add tag to profile/interests".