I work for an online marketing company that does CPC (cost-per-click) ads. If you want to make Realjock some revenue then you can click on their banner ads but it won't really help the companies that are advertising on this site unless you are expressly interested in their products.
Generally speaking, companies that advertiser through the internet pay between $.005 - $.50 (this is just with my company's pricing; Google can be much more expensive). This may not seem like a lot but banner ads and text ads on search result sites can receive tens of thousands of clicks per day. That can quickly add up to a hefty bill.
Moreover, each time you click on any ad, that company has the ability to track if your visit to their site was a 'success' (i.e. - if you bought or subscribed to something). If they have a ton of useless clicks that don’t generate in sales then they terminate their ad program with the publisher site. So, if you are clicking on a banner just to click on it, you are bringing down the overall ROI and actually hurting the publisher site who is hosting the ad.
Moral of the story, only click on ads if you are interested in the product/service thats being offered.