Offsite scripts GAH!
I've lost track of the number of times I've had to bash heads together over this kind of thing.
Its usually some sales or marketing drone think that adding a <Insert retarded social network here> link to the website will magically add a tone of traffic.
This tends to result in emails like this :
F.F.S. people if its an even vaguely secure area no script that you have not copied locally and validated does what you think it does goes in, is this so hard to understand.