A few people are finding that some 3rd party scripts (such as through Addon Scripts) look like they are being hacked. Usually what has happened is the script was installed and including HTML code in the posts is allowed.
It is very easy for someone to make a post and insert code to redirect to another site. They could also insert code to do other 'bad' things as well.
For your own security & peace of mind, make sure any script that is installed, if postings, comments or any input from Visitors is allowed, you must make sure HTML code is turned OFF!
Turning OFF HTML code can usually be found somewhere in the Admin section of the script.
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