We just enabled support for Pownce that is identical to our Twitter and Jaiku support. Just make sure your reviews are sent to the public on Pownce and use http://www.pownce.com/feeds/public/your_user_name as the RSS feed when adding it to your sources on LouderVoice.
This on Pownce:

Becomes this on LouderVoice:

As always, let us know here if you have [...]