A bunch of sites are infected with malware according to this article:
https://webmail.intermedia.net/services/go.php?url=http%3A%2F%2Fwww.networkworld.com%2Fnews%2F2008%2F050708-web-attack-worm-infecting-hapless.html%3Fnlhtsec%3Drn_050908%26nladname%3D050908securityal
You can see sites that are infected by simply searching on "winzipices.cn" in Google but do NOT go to those web sites or your computer will be affected as described in the article.
You can see if your own site is infected by typing into goole: "site:[yourdomain.com] winzipices.cn".
Google in the past has put warnings on infected sites - hopefully they will do so with all of these soon.