Technology Repeated

Okay...so I know I posted about technology awhile ago, but I have to bring it up again. I am just amazed by how easy it is for CJ to use technology. CJ has been playing on the computer for about 6 months. We would log him on to PBS Kids and sit and play games with him. We slowly began to let him play a few times on his own. About a month ago though Case was in the other room finishing up laundry when he heard what sounded like one of the games on PBS Kids. Thinking it strange as the laptop had been turned off and the lid was closed he came out to see what was going on. When he walked out he could not believe it. CJ had opened the computer, pushed the start button, clicked on the Internet, typed in PBS until the PBS Kids info came up, clicked on it, and picked out a game. He was happily playing the Georgie game. He just turned four in July. We were just shocked. He was told no playing computer without Mama or Daddy's permission. I just think it's so strange how kids just pick up on it. Mind you, Case or I are usually on the computer between school and work. Still I can't believe how easy it was for him to pick up. Now Case and I are trying to figure out if we need parental blocks and how to put them on. I just wonder if other kids are like this and if so what parents are doing about it. I know the suggestion is no more than two hours of total screen time per day, but honestly most days he gets more than that especially during the summer when he didn't have school.