1. I wanted to know who subbed me, and I'm generally a cranky person anyway so I wasn't too pleased when only thirteen people spoke up, though I wasn't expecting that many to even comment.
2. I'm going to soon be posting a weekly blog about my opinions, my feels, and my plans in life. So there's that.
4. I think bandwagons are so big on this site because of the decline of user generated content in the past few years. When they come they fill a kind of void and give those who participate something to do for a few days (or in my case a few months haha).
6. Don't worry, I'm very guilty of all of the above as well.
As for your quiz, you could make a general knowledge quiz, but one that somebody couldn't just use google and find the answer in the first or second link... On second thought I don't think there is any kind of quiz where google wouldn't be someone's best friend.
I think that's all I posted there before I got an error message. >_>