Like many others, I tend to just copy the image urls I need and site the sources. Let's face it - it's super easy and works well on Steemit.
But have you ever noticed this replacement for the image in Steemit.chat (or other places where Steemit articles are posted/linked)?

Apparently this is called hotlinking, and it's a no-no. Many UIs, such as WordPress and others, are built so that these images won't appear (like we see in chat). For some reason, that hasn't been implemented in Steemit yet.
NO HOTLINKING - what does that mean?
If you want to show Pixabay images on your website, please upload them to your server. Pixabay image URLs don't work on external sites.
Pixabay
In other words, it appears that we need to be hosting even free images on sites designed to do so, even though it does work... for now.
Will Pixabay and others complain? I have no clue. But it's something to be aware of. This is especially true for articles that you hope will show up on other sites, since the image won't convey accurately. It'll either give that beautiful dark square, or a url.
I guess it's all part of the maturity of Steemit. Perhaps the devs will want to make sure to be proactive on this one.
Steemin' on,
Another Joe

Logo courtesy of @oecp85