I just found out you can actually vote against it. I went and voted and of course, the people who hate the new button are the ones who have sought out the poll and voted against it, but it's amazing JUST HOW MANY people hate it. Go here and vote:
http://community.livejournal.com/eljayfeedback/515.html The folks who run LJ have, in fact, been reponsive when LJ users disliked certain "improvements" in the past. That new home page thing with the celebrity blog links (which is referenced in the answer I chose in answering the poll), for instance, was gone within, like, a week. Go vote. Takes two seconds.
By the way, you should feel free to share this particular entry of mine! (But no other.)