Goatvote asks that you not simply vote in a poll, but also include URLs that support your argument. The idea is that Goatvote will sift the cogent arguments to the top by counting the most popular URLs, rather than just being a brainless "click here".
The vote in question is about whether you should be able to control, not whether someone friends you, but whether then then show up on your "friends-of" list.
Here's my argument in favor of option 2 out of the three: http://www.livejournal.com/community/lj_biz/217808.html?thread=4645072#t4645072
and another argument I favor:
If you care, then try out the shiny new Goatvote toy and let's see how it works!