Silly/curious question about the backstop ads in baseball games

[DanteEXT]

I generally don't watch much baseball but I'm watching the Reds game right now. Looks like the ads there are actually on a physical rotation. I say that in that I thought in the past when I've watched games on the replays the ad section was a green screen. I'm I crazy or has the green screen effect been used in the past for ad displays?

I guess as a secondary question, do baseball fans find the advertising annoying or not noticeable?

 

[casmith07]

I think they're annoying, but I think all advertisements are annoying.

 

[Vanilla2]

The only time I watch baseball is to help me take a nap.