Yeah... but it's their thread.
This user used at least 8 different threads to spamm this link!
Rules
https://bitcointalksearch.org/topic/unofficial-list-of-official-bitcointalkorg-rules-guidelines-faq-703657
"12. No duplicate posting in multiple boards"
"24. Advertisements (including signatures within the post area) in posts aren't allowed unless the post is in a thread you started and is really substantial and useful."
Ads are typically not allowed in posts (outside of the signature area) because they are annoying and off-topic. It is especially disallowed to put ads or signatures at the bottom of all of your posts. Except for traditional valedictions, which are tolerated but discouraged, signatures are for the signature area only.
However, if you are using the forum as a publishing platform to host something really substantial and useful, selling ads in that substantial work is allowed. To be eligible for this, your post must be in a topic that you started, and your post must be substantial and long enough to make the ad seem entirely insignificant. If in doubt, ask me.
His threads are not useful, there is nothing really important and useful. There is just this user spamming short posts with the same link.