There is a system-wide plan to test lower voting threshholds - basically 1 point for up or down voting (so any new registered user) with no downvote penalty. The full details are here on Meta SE..
The powers that be are asking for sites to volunteer. I just want to state for the record here that I am very much against this idea. The numbers can (and maybe should) be tweaked a bit, but allowing totally new users to vote without any other interaction is, in my opinion, a disaster waiting to happen. I encourage others to upvote this and/or to write an answer with more coherent arguments, so that it can be clear where this site stands on this policy.
And if this is the wrong way to do this, let me know. But since they are looking for sites to volunteer for testing, I think it is important to discuss.