Do other tv/cable news networks print retractions? I can't remember any, but maybe they have a specific webpage you have to go to in order to see it? I doubt any of the non-news programs on those networks do, and those comprise the majority of the programming. So maybe it's just hard to find for the little bit of actual news.
Rarely. Most news isn't "breaking" on TV, even if they do they refer to the online story. So that's where stories are corrected, because that's the official record.
Do they actually refer people to the online story, or do you just mean they are using that story to regurgitate to the viewers? I highly doubt most of the viewers are recieving the corrections if they're only given online.
Yeah, when there is breaking news it seems there's a ton of speculation and bad information given.