duperemove not universally available.
The article should note that duperemove isn't available for all platforms all the time. If this means it is appropriate to 'revert' to bedup, noting so (this wiki article being the 'expert') would be useful.
Also, it would be worth mentioning that Ubuntu has a ppa for it / duperemove does not come with btrfs-tools (else one keeps hunting for what one doesn't have, and the new user will be baffled.)
Per http://askubuntu.com/questions/631917/how-can-i-deduplicate-my-data-with-btrfs it would be useful to note that https://launchpad.net/~lordgaav/+archive/ubuntu/duperemove exists, albeit only for trusty (14.04) or later.
- This sounds like too much distro-specific for this wiki. We had pages with distro information but removed them because nobody kept them up to date. We/you can add links to other wikis of course.