That is just one skit idea. You could actually create a Character who has to interact with these TV people just to make it through life.. They show up on his TV, his phone, his computer. There are millions of ways that you can take one Character have it be an on going gag. SNL does it all the time. You just need to have a bunch of Characters in your belt so you aren't doing the same skit every week. So one week you do the skit of the guy who talks to the people in the TV, next week its a different character. You create your own Youtube World and develop what you want. See what works see what people like and keep going.