Why are most marketing tags (Omniture, XE, etc) written with document.write()?

Posted by Esteban Araya on Stack Overflow See other posts from Stack Overflow or by Esteban Araya
Published on 2010-04-05T21:37:33Z Indexed on 2010/04/05 21:43 UTC
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web-development

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JavaScript

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omniture

Considering the negative effects of document.write(), why are most tracking/marketing tags written using document.write()?

I've thought about it quite a bit, and the only respectable idea I've come up with is that by writing it client side, we're guaranteed the browser won't try to cache the resource. Is that it? Any other ideas?

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