Kinda depends on your perspective. It costs advertisers money and pays the website you’re visiting. If it’s a shitty site with a lot of ads, you’re effectively encouraging them putting in more ads. Since you’re “clicking” on every ad, and it’s not affecting your experience, it sends a message that stuffing the page with all those ads is good for revenue. It also just charges advertisers. I don’t personally think running ads inherently makes a company bad, so in my opinion clicking on ads out of spite so they get charged for a useless click is kind of not a great solution imho. It seems like it kinda benefits the wrong people, unless you’re exclusively going to great websites running ads for terrible companies.