Why split the [removed] tag when writing it with [removed]()?

Question

Why do some sites (or advertisers that give clients javascript code) employ a technique of splitting the tags

Answer 1

I think is for prevent the browser's HTML parser from interpreting the as the closing tag of the actual script, however I don't think that using document.write is a excellent idea for evaluating script blocks, why don't use the DOM...

var newScript = document.createElement("script");
...