The Marvelous Misadventures of Flapjack/Headscratchers

Why the hell was this show canceled!!??
Seriously, WTF!!
 * Or why it was Screwed by the Network so badly?
 * It wasn't cancelled. Thurop chose to end it.
 * It still hasn't gotten any reruns since it ended.

It.. Ended?
I haven't seen episodes of it in a while, but I didn't know that. I knew Chowder ended though. Did they give any ads toward this finale? It was such a popular show too.. It's weird they didn't make a big deal out of it.
 * Nope. A lot of people had to find out from Thurop's Deviant ART profile.

What about the DVDs?
Why release just one volume of the show, consisting of five episodes, on DVD just to leave it hanging with no word of any future volumes?