Replacing broken avatar images with background SVG Emoji by @edent@edent (shkspr.mobi)
When someone on Twitter mentions my blog, the WordPress WebMentions plugin automatically fetches those Tweets and turns them into comments on the blog post. It looks something like this: Matt's smiling face. That is pretty cool - but has one slight problem. If someone changes their Twitter avatar, o...

Doing the same @edent – just less fancy:

background-image: url('/wp-content/plugins/semantic-linkbacks/img/mm.jpg');
background-size: contain;