Some of the ads are amusing for sure. There's also an Orwellian aspect, as some of them are tailored specifically to each individual's browsing habits and geographic location.
CF gets one or two cents each time an ad is clicked; I'm not going to urge you to go out of your way to click them, but if something looks interesting, it does help pay for this site's costs.
Just be sure to only click on ads that you might genuinely be interested in. As you know, Google is all knowing; for instance I'm not allowed to click on the ads on my three sites that have them because it's seen as defrauding advertisers, so "keep it real."