In the first 'General' section, it is not clear if you're asking for a ranking of each section based on the current content of those sections or based on the section itself. For exampl, Freedom & Politics is a great section to have and I would rank it fairly high, but the average article posted to it would cause me to rank the quality of the content of that section lower.
I think it would be good to add "SPAM" as an option under "I tend to rate editorial/topical comments down on occasion because".
You could add "Possible trolling" as an option under "When voting on stories, I find the following criteria to play a role".
Under the section about why people rate things low, you should probably modify it to indicate how low. For example, I will rate flamebait/trolling/personal attacks down to a 2 or possibly a 1, but not a 0, except for extremely exceptional cases (I would rank spam a 0). So this section would not provide terribly useful results, because "low" tends to be different from person to person, especially since most people don't adhere tightly to the FAQ explanations of scores.
I just read K5 for the articles.