And this new one seems to be affecting many web sites in the last few days. All of them have the following on their header or index.php files:
window.top.location.href = "httx://www.jqueryc.com"
Which redirects any visitor to the web site to jqueryc.com where it is then sent to other random spammy domains (seems like a TDS is in place).
*Note that the domain was just registered (20-nov-2012), so it is not being flagged anywhere.
**The official jquery sites are jquery.org or jquery.com. Other variations are likely fake.