Starting today, Google has depreciated its Maps v2 API. Most of the maps on the site have already been converted to v3, but not all, since there's just so many of the things. Namely, the discontinued services and maps related to the DX Tool. Google is trying to use a wrapper to "bulk" convert v2 maps to v3, but makes no guarantee that it will work.

If you come across a non-functional map on the site, please let me know so I can have a look at it. I want those things to work, even if they're not perfect.