Don't delete your own questions.
When I checked a little while ago, you had only one question with a negative score (-7). Checking again just now, that question has disappeared. Did you delete it? More to the point, deleting a lot of your own questions seems to be one of the things that can trigger the automatic question ban. If you've deleted more than a few, you should consider improving the questions and undeleting them.
Answers get upvoted when they're helpful.
I took a look at some of the zero score answers you've posted, and I notice that many of them are very brief and not very clear. For example, compare your answer here to the others for that question, like this one. While it's true that it's not a great question in the first place, it's also apparent that you spent about 15 seconds writing an answer whereas the other respondents made a much greater effort to be helpful.
Similarly, compare your answer to the accepted answer to jQuery detect hover over left or right of a single div. Yours is a one-liner without an example; the accepted answer has both example code and a link to a demo.
Brief answers can be okay if they provide a clear answer, and a brief answer is better than a needlessly wordy one. But an upvote indicates that the answer is "helpful," and a thorough, clearly explained answer is more likely to garner upvotes than a one-liner.