In this site sometime appears strange things, as messages (pop-ups) saying: you are the 10000 th visitor "click here"... (certanly a hacker attack).
Tome cuidado com menssagens estranhas, links fora do padrão. Possivelmente são ataques the hackers (spywares, etc).
This is a wonderful site with free, high definition wallpapers for your PC.
My rating: good site, where you can download a lot of beautiful wallpapers, without risks of viruses.
(The publicity can be annoying, but as it is a free service, it's ok).