I have developed a new plugin for wordpress based on the original Backlinks.com’s plugin, which allowed only one key for wordpress site.
This new plugin makes it easier to use different keys to use Backlinks assigned for each page or section of wordpress.
The idea was to use widgets for every published page in your Control Panel at Backlinks.com.
You must found the key for the page at Backlinks.com and put a widget in your sidebar with the key and the URL logic field indicating the place where must be show the links.
You can test it here, until I’ll upload to wordpress repository.