Shimon noted that Centro is doing a funky chain redirect – a 301 from http://realcities.com to http://www.centro.net/realcities then a 302(!) to http://www.centro.net/realcities/
While the damage is likely not permanent, and it may be that the RealCities pages had very little SEO value to start (although I doubt that’s the case), this is classic case of how SEO should be a part of any M&A deal. An uninformed buyer could lose a huge amount of value overnight by making these kind of easy to avoid mistakes.
Shane and Simon please ping me with your link requests. And Centro please ping me if you want help fixing your problem