What does ANN mean?
Announcement - can be of a new service or a new token that get launched. At one time we had ICO projects posting their ANN as a part of their promotional campaign on this forum in order to get the word out among the forum users.
Although with time the ANN of Altcoins sections begun to show their real faces that majority of these ICO projects were scams or failures from the start.
I agree because some of the projects are focused on social medias whein millions to billions of audiences get advertised every single day plus the streaming sites. Youtube, twitter, facebook, telegram, reddit are common to newer projects nowadays.
It is easier to spread a scam project on social media where the calling out gets suppressed like anything. While on this forum we have "Scam Accusations" where the importance to the calling out of such scams is given much importance so much so that we can tag the accused and ruin their reputation here on bitcointalk.