According to BlogcastFM “a massive exploit that has hit a large number of Godaddy Hosted WordPress Blogs this weekend.
This hack appears to redirect visitors upon arrival from Google and attempts to install malware on their computers. When I was visiting the site directly, whether logged in or as an Admin, even if I could see the malicious script in my view-source window I did not have any issues and it did not redirect me. This means your site could be hacked and infected and you may be unaware.”
Full story: http://blogcastfm.com/announcements/warning-massive-number-of-godaddy-wordpress-blogs-hacked-this-weekend/
Info on fixing the issue at: http://www.wpsecuritylock.com/cechriecom-com-script-wordpress-hacked-on-godaddy-case-study/