Black Swirling Dots

What are the black dots in the corner of a post? They aren't on very many of them. They move in a swirling type fashion.

 

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I could have let this go on for a while... let ya'll think I lost it or something, but naw, that's not me. I can't stand waiting. So,,, now do YOU see black swirling dots?
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I found this one on the recently updated Marten post, the one that says (currently)in the title. It is on the first post on the thread. Maybe cause it's from 06?​

 

That's right! It's like it's in a time warp. Did you see it on the post from Skogie? You think that's all it is, just copied? How do you copy something like that if it usually only shows up when it's loading.

 

It only shows up when a post is loading. Your saying I can right-click and copy a moving object? Well, I guess I did, but only because it is still on that Marten post. But I'll give it a shot when I hit send on this post. If i can't copy it, then I won't post my failure and you'll know it didn't work for me.

edit: O.K. I didn't see it when I posted, so I had to ask, When does it show up? THEN I noticed it showing up, very quickly mind you, when I hit edit. There's no way I can copy that. It was too fast. Does that make sense?