When browsing lists of questions in one of the tabs (interesting, hot, etc) there is a summary of each question.
On each summary entry (among other things) the questions tags are surfaced.
When hovering over one of these tags, the tag popup is shown containing several links ("faq" "top users", "edit", "subscribe", "rss").
My feature request is similar to the request to add favorite control to this UI element.
Please link "ignore" so that clicking it would add the tag to your Ignored Tag List.
This would allow for one-click addition to your tag lists, precisely at the point that you notice they need to be favorited or ignored - without interrupting your flow to scroll the page to the top and type out the tag name.