woothemes/woocommerce — pull request #1981 by GeertDD (2012-12-12 16:57:31+00:00)
Title: Using fixed meta keys for storing customer IP and user agent

**Meta keys should be constants.** By allowing a custom translation for them you never know for sure where they got stored in the postmeta table which is very inconvenient when you need to access them. Even worse, translation strings might change causing IP and user agent meta data to be stored under different meta keys for different orders.