DO NOT USE SUNSCREEN!!!
There's another theory behind skin cancer. It's not as simple as "don't go in the sun". That's just stupidity. We need sunlight to be healthy (ie vitamin D).
The nations with the highest rate of skin cancer are the ones who PROMOTE sunscreen use heavily. Sunscreen is not as beneficial as you are led to believe because they do NOT block UVA rays (these rays penetrate deeper into the skin). Sunscreens primarily block UVB rays, which do not penetrate as deeply into the skin as UVA rays. More importantly, most sunscreens contain very harmful FREE RADICAL generators in their ingredients that are activated via ultra violet light (ie the sunlight). So you're slathering all this crap on yourself only to have the free radicals activated from the sunlight. Yeah that's smart.

Another thing people do not realize is that when using sunscreen you tend to stay in the sun longer then you should.
Another idiotic thing about tanning is that most people who do not have the genetics for dark/tanned complexion are the ones who tan heavily. My dad, who is almost 70, has spent his entire life in the sun (moreso then any of you will ever in your lifetimes). He doesn't even know what the hell sunscreen is and he's fine as a goat. Point being, he is from an equator nation, so his skin is more sun tolerant. Too many pastey white pale asses trying to look like they're from the Carribean.
SO WHAT'S THE POINT:
1) Sunscreen isn't as beneficial as you think and may in fact INCREASE skin cancer.
2) Use common sense people!! If you don't have the genetics for a tanned complexion, STOP SPENDING HOURS IN THE SUN AND TRYING TO LOOK GOLDEN! Duh!