Here is a copy of an informative post from m1t0s1s in our September Google SERPS thread [webmasterworld.com], where he points out the ideographic variant for the dot, or "full stop" that these domains are using:
He goes on to comment:
Thanks for that, m1t0s1s. Normally we do not allow specific Google searches to be published in posts here, but we will make an "educational exception" in this case. I can certainly see why this kind of domain variant might have Google scrambling to fix some deeply embedded routines throughout their system.