Yeah, this one's the real deal. There was also an animator named Mark Colangelo who came awhile back and talked about his scenes. I'll link you the thread; being an animator yourself, I think you'll find it really interesting.
Yeah, that's really good. I love the deleted scene where Homer says something intelligent and Lisa sees the crayon sticking out of his nose, so she pushes it back in, showing she loves her father like he is. I wish they had kept that as the real ending.
It depends on the tournament. You usually add one point to the episode you want to help, and subtract two from an episode you want eliminated. The time varies by tournament. In some you can only vote once every 24 hours, some every 12, and some you can vote after every five posts or so. These are still fairly new; they were introduced by Amanda Hugandkiss in late 2013 to replace the "traditional" tournament style, and now it's pretty much all the Noiseland Arcade is.
Hey, if you'd be okay with me making a little correction, because you've mentioned it a few times: The episode is Two Dozen and One Greyhounds, not 12 dozen. 145 dogs would be kind of hard to look after!