This one is super easy. It’s simply a matter of copying the URL from YouTube, or Twitter, and copying it into the post, like so:

Before clicking Publish, just make sure that the links are on their own line (with no text beside it, as above) and make sure they do not have a hyperlink (the blue text and blue underline). You can remove this hyperlink by highlighting the link and clicking the unlink button (it looks like a chain breaking), like so:

This will make the link plain text (removing the blue colour and underline).

Now you can hit publish! They should come out nice and neat.

https://twitter.com/CleighMoores/status/364979272273760256