I keep Baby first tv on for most of the day since it's all educational. My 1 year old will watch for a few minutes and then play or get into things lol and then come back and watch for a couple more minutes. There's a couple things from there that I've noticed he has learned, like to clap when a certain song comes on. As long as they are not glued to it, I see nothing wrong with tv. We do shut it off in the evening though.

I just go with the flow it's on her cartoons all day. which her cartoons are on pbs and Disney junior all educational shows. she doesn't sit in front of the tv all day she comes and goes. certain shows she'll stop and watch but once it goes to commercial she runs off and plays then comes back when her show is on. and other shows she don't watch them she just plays and it's background noise