How many trademark infringements can you spot in the The Million Dollar Homepage? Among all the ads for free porn, free domain names, and free gambling (only the first click is free), I spot least eBay and Yahoo! logos that don't go to those companies' websites. I can't tell whether they're associated listing services, click-through affiliate links, or phishing expeditions, but I imagine the companies would have a decent trademark claim against someone who used the logos for commercial gain.

See this Washington Post story for more on the site and its bubble-story.