I've also made a userscript to remove featured answers. I figured I'd plug it here since I assume most people installing this will also find it useful. Get it https://greasyfork.org/en/scripts/16423-ask-fm-featured-answer-remover.

Changelog:

02/28/17
- "Ask your friends" is now themeable
- Footer line is now themeable
- Updated settings page
- Updated pop-up menu hover colors
- Fixed "ask anonymously" check box
- Fixed report list colors
- Fixed tag menu colors
- Fixed hashtag menu colors
- Fixed login/sign up pages
- Fixed colors on responsive-design view
- Fixed single-question view font

12/25/16
- Fixed View More gradient

11/17/09
- "Ask anonymously" button is now more clear when deactivated
- Removed white border under profile header image
- Added hover color change for favorite star

11/08/16
- Fixed answer text color

09/15/16
-Fixed feed font

08/17/16
- Styled the useless hashtag feature
- Fixed sidebar padding issue
- Fixed "Ask your friends" border color

07/16/16
- Removed "questions won't be displayed until you answer them" box
- Fixed question count color
- Changed changelog formatting to look like an actual changelog

06/01/16
- Removed "People You May Know" tab
- Removed broken animations
- Fixed the share box dialog colors

05/24/16
- Fixed sidebar text color

04/26/16
- Changed theme to affect http://ask.fm since the geniuses at ask think http is unnecessary
- Minor text fixes

03/08/16
- Fixed newItemsReady

03/07/16
- Fixed checkbox color
- Fixed padding issue

02/26/16
- Fixed all of the colors that broke
- Accent color is now customizable

02/22/16
- Overhauled userstyle to work with ask.fm's new theme settings. For this userstyle to work properly, you must be using the default theme (orange)

01/21/16
- Fixed login page
- Fixed minor padding issue
- Fixed background color of a few dialog boxes
- Added hover colors for question buttons

01/14/16
- Overhauled style to work with new layout
- Moved avatars back to where they were before the new layout (i.e. to the left of questions instead of below them)
- Fixed colors for responsive display mode (when the screen width is below 960px)