Hahahahaha... that is true... there is a consider amount of selling going on in the crypto space these days, but like you mentioned, this particular trading advice piece did have quite a bit more helpful suggestions as compared with most regular advertising methodologies.

Actually, a couple of weeks ago, I had seen an advertisement for a "free" event that would have allowed me to bring a friend and to attend several different "free" classes and to even receive free food (a barbecue of sorts), and after I looked at the schedule, I noticed that there were like three classes per hour that were on various topics, but in this particular field I was already sufficiently familiar with the practice that it takes nearly an hour to really get into the "meat" of the topics, so I  realized that each of the classes were so short that they were going to likely only serve as mini-advertisements, so really the event and the food were not really "free" because there was likely not going to be enough time for any actual meaningful substance to be shared during that amount of time.. so I unilaterally decided NOT to take my friend to such allegedly "free" event.