I just heard from one of my colleagues at another high school campus in our district that the students have successfully circumvented the district filters by using proxy servers to access MySpace. 
…of course… now the district is trying to block all of the proxy servers…
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I like to refer to this as “the arms race.” Certainly an ineffective place for busy technology folks to spend their time.
The Arms Race… that’s great! I love that analogy… It is an extremely ineffective practice and I will continue to advocate for “teaching” and “collaborating” instead of “blocking”.