We are going to support images in the next version we release (ETA 1 week), in terms of videos not sure how we'd be able to do that currently but constantly experimenting. Have you tried the extension yet?
No I have not. This is the killer feature for me though. Text based stuff I can just ignore or block, but the videos/images are what actually bother me (the abundance of porn on the site is what prevents me from using it in public).