Can I add multiple pages at once to my account?

If the web pages are all separate top level domains and websites then unfortunately each of these will need to be added and validated separately.

However if the web pages are all part of the same website and top level domain then yes, this is possible. In your Control Panel you will first need to add your website homepage and activate it by adding the installation code. The installation code needs to be added to a sitewide sidebar or footer file in order for the code to be present on the sub-pages as well. Without adding the code to these sub-pages you will not be able to use the multi-page add tool as described next. Please note that even though the same installation code is present on all pages of a website sold text links will only display on the pages they are purchased on. We will sell text links on the homepage and each sub-page with PageRank separately.

Once the homepage is added, validated successfully, and active in our inventory you can now use the multi page add tool. Click Add Links Page. Next select the second option to add multiple pages. Enter the homepage URL for your website again. Our automated bot will then search all the sub-pages on that website for other pages with PageRank value. Assuming the installation code has been correctly added as described in the preceding paragraph then our bot will locate, list, and then activate all sub-pages with PR.

You can view this article online at:
http://www.backlinks.com/kb/index.php/article/multiple-pages