Sort of....
I've done research studies from time to time over the years to make extra money. Guinea Pig stuff for healthy volunteers but the 2 places where I did them phased them out.
There was an ad for something similar on my FB...I assume b/c I had searched for them. So I clicked on it and got the info, screened, and completed the study. Made $4,000.
I didn't buy anything but the ad did work. I'd have never found the site and made the money without it.