This land is your land; this land is my land; from California to the New York Island; this land is riddled with STDs.

Zoom in and click around on this map, or scroll down for some of our favorite hotspots.

It makes sense that the website is adept at creating data maps. There is a huge and complicated pool of rental price data out there, and being able to spot trends and opportunities seems important. It also seems like it must get dull after a while, which is what I presume led to someone at their office saying, "hey, what if we fed the CDC's data on sexually transmitted diseases into this thing?" Whatever the reason, the result is something you could happily waste hours on, just hovering your mouse over parts of the country you've never visited and judging them for their gonorrhea outbreak. If you're in a rush and would like to skip straight to the judging part, here are the 10 most diseased areas of the country: