PSA: Truncating the displayed URL of links can hide the fact that they may be direct file download links. Phones don't have a hover functionality so you may find yourself downloading a file you didn't intend to. This just happened to me a few minutes ago.
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amazing the number of people who never got rick rolled these days and have no concept of checking links
@Kinnison
But there's not an easy way to check links on your phone. I was just scrolling a timeline here and suddenly found myself downloading a PDF file I never intended to.