Can I see who downvotes my questions/answers? Sorry if noob question...
No, you cannot. Votes (up or down) are anonymous.
Adding to @zaq's great answer, you seem to have received only three downvotes so far and two of them were cast even before you gained any reputation to lose.
I know it's annoying and you want to know who downvoted your post, but nobody, including a moderator, has an access to this information unless they investigate a serial downvoting.
If you suspect a user is serially downvoting your posts, you can flag one of your own answers for in need of moderator intervention and ask for investigation. I wouldn't mind getting a few downvotes per day, though.
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