I don't have a problem with any of those images. The first (Scanman's) is an image of text. I don't see much of a difference between posting a screen shot or retyping the entire thing. Personally, I would like that better than reading yet another long, drawn out post of several paragraphs. I can clearly see that it is a thread from another forum and can differentiate between that and the poster's comments and/or our forum quotes. In other words, it stands out nicely.
The others at least are germane to the conversation. I personally didn't find it interesting so I scrolled on past, but I don't see a problem with illustrating a point.
Now, huge pics of our dogs, funny animated .gifs and other various memes,
no.
There are two types of people in this world: Those who can extrapolate from incomplete data.