I have been seeing a lot of this too. To be honest, I've been questioning even the use of someone else's picture and sourcing them as well. Sometimes when I am writing an article, an image pops to mind. Creating the image could prove a tedious task with just basic photoshop knowledge. I see a lot of posts that are very in-depth well thought out articles with a bunch of sourced pictures. Apparently this is allowed for context as long as you are citing your source.

I still have a slight problem with this. It seems you do too.

For example, I used a snapshot in my most recent post of a dude taking down another dude. The source was already written on the picture, so I felt no need to "double source". However; I still don't feel great about using this picture because it wasn't mine. Do you agree with me? To make my post better, I originally wanted to act out that same pose and take a picture, thus making it mine, but I didn't have a second person, so I just sourced it in order to provide the proper pose in the scene I described.

What you've said pretty much confirms my thoughts that I should not have used the picture, sourced or not. This guideline would indeed make Steemit content so much more valuable and original.