Feel free to add some suggestions or reasons! I may include them on here. :)

From Cartoonnetwork:

Regular Show:
-The animation is actually decent.
-Funny
-Some characters are actually smart and use common sense

Adventure Time with Finn and Jake
-It has a very weird (but cute) looking setting.
-Funny
-A very fun and adventurous little cartoon (Hence the title, ADVENTURE Time.)

What I have to say to Cartoonnetwork: You're doing a rather decent job. Now let's get mais desenhos animados like these.

From Nickelodeon:

Brilhante Victoria (but slowly getting worse, like iCarly :/)
-Interesting and original characters
-Fun story lines
-Funny

The old iCarly (sometimes they still play it.)
-Random (you know, when it was UNDER control.)
-Funny
-Cute and quirky characters

What I have to say to Nickelodeon: Please get rid of Kung Fu Panda and gimme some VICTORIOUS! :P

And finally, disney Channel:

-Good Luck Charlie (Slowly getting worse too.)
-Funny (especially the mom, she cracks me up. :D)

What I have to say to Disney: Yeah, I only have ONE show that's DECENT from your channel! Yeah, FEEL ASHAMED! :P

Wow, this artigo is really short. That's not very good...