User blog comment:Roranoa zoro/What's great about Arlong arc ?/@comment-1595565-20110405130923

I'm guessing that with all the stuff going on with Fishman Island and how Arlong's influence is playing a central role in the plot so far, it's causing people to reevaluate it, thus it is now their favorite. Wait for them to get well into the next arc and the amount of people saying that will slowly disappear.