I get adds mostly from Edisons and Alibaba sometimes Hare&Forbes and occasionally others, rarely any that are shooting related. Add free forums disappeared 15+ years ago. Do you think providers of internet facilities do so out of the kindness of their collective hearts? Bills have to be paid somehow. Blame the developers of anti-adblocker software. edit: Some sites are so plastered with adds that sometimes it's difficult to follow the actual content.
"Anything is possible if you don't know what you are talking about." "There is no expedient to which a man will not resort to avoid the real labor of thinking." Sir Joshua Reynolds
The ads you get are AI generated, usually related to a search word you may have used somewhere either in Google or Edge or some other search engine. I am currently getting Temu and Ali Express ads for electronics and load restraints.