The user Smooth is promoting a thread moved to the Altcoin ANN section by creating a new locked thread in the Alt Discussion with a link to the one in the ANN section.
He bumps locks, bumps locks, delete post, locks....
This is a form of spamming when you promote a coin and artificially keep it to the top by bump and locking.
Thread in questionhttps://bitcointalk.org/index.php?topic=1472763.0~BCX~