Let's say there are 10,000 subjects and you are interested in 10. You click 100 links for the subjects you are interested in, and also 1,000 links picked at random. Now random subjects get somewhere between 0 and 2 clicks, way less than your real interests.
You could maybe pick 20/30/40 random subjects to fake a prolonged interest in, and really focus on those, maybe swapping some out over time. In any case, I think one has to pump enough fake volume through to make fake interest look like real interest. But then the opposite problem comes up - excessive requests for one topic might signal fakeness. Maybe you could have fake traffic be produced proportionally to real traffic?
Advertisers would still win, though. Instead of showing you ads for 10,000 subjects of which one interests you, they are now showing you ads for 2 subjects of which one interests you. Much better targeting.
And if they want to link your profiles from elsewhere, two interests of which one is fake is still pretty powerful.
