Are you using Nik software products, such as Viveza or Siler Efex, for post processing? Well, after December 7th 2012 upgrades and support will be handled exclusively by Google.
To complete the process, you will need to transfer all of the information you used to register your Nik products over to Google no later than December 7th 2012. You can do so by visiting http://www.niksoftware.com/company/usa/entry.php?view=privacy/en_transferyourdata.shtml
This is a good sign, as it indicates that Google has every intention of maintaining and supporting the Nik suite – despite how Google has handled many of its acquisitions to date.