Is there anything in place to discourage or prevent rapid voting across the site. I know there is one vote per five seconds limit on comment votes, however is there anything like this for questions and answers.
I'm mostly asking this because I just received one downvote on a question and one downvote per each of a few answers I gave over a month or two ago. While I may be wrong, I feel its odd for this to happen over the course of a minute or two. No comments were left with any of the downvotes. Consequently, I feel like I was targeted by someone that just decided to give me a bunch of downvotes on as many things as possible. I have no way of finding out who--not that it matters...
The question is, if there isn't, should there be something in place (such as a time limit) to prevent, or discourage, these sorts of voting sprees?
Not only to prevent what I'm describing but also to prevent people from just going through and voting on random things quickly to get their vote count up quickly.