There have been multiple accounts created with the sole purpose of posting advertisement posts or replies containing unsolicited advertising.
Accounts which solely post advertisements, or persistently post them may be terminated.
catloaf , 7 hours ago Believe it or not, the article answers that question. The linked blog post from the devs has even more detail.
Believe it or not, the article answers that question. The linked blog post from the devs has even more detail.