The point of spamming here, is not, as you may think, to get members of this forum to click on links and thus to purchase products.
The majority of spam these days is aimed at google, because their algorithm ranks a site based upon the amount of other sites which link to it, spammers will put links in as many places as possible. Therefore they won't always make it obvious on here, in fact a lot of the time they'll try to hide it as best they can by attempting to post something 'normal' but with hidden links, or links in their signatures.
The interesting ones are the ones where they join up and post seemingly plausible replies like "thanks that's very interesting" etc, but they often do it in quite poor English, drag up old threads, or say something completely out of context, which most here would never do

The stewards robbed us of a runaway win by Piastri and half the Silverstone crowd being able to leave early to beat the traffic. The stewards tried to give us a McLaren battle by reining in...
Race 12 - 2025 British GP -...