User blog comment:PitchBlack696/Monster Hunter Portable 3rd/@comment-98.182.60.44-20101007002552/@comment-1520318-20101007013207

There is no infrastructure for online play. That is only based on a Kotaku blog (which doesn't have a lot of credibility). According to many OTHER japanese sources, the infrastructure is only for quest downloads. At least, that's all that is known so far.