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Knowing that nothing is ever verifiably and completely deleted... I'm not sure I see what need this fills.

• droopyEyelids 13y ago
  In general, security is never perfect, so imagining the perfect binary "secure or insecure" isn't useful. Instead, think about it in levels. Is something secure from a casual observer? Is it secure from your teenager who can devote a lot of time to it? What about a professional who devotes a lot of time to it? What about a court order? What about a concerted effort from the government to build an ASIC farm to crack your encryption? You could look at this in the same way. Is your tweet visible to a casual observer? Is it available to a dedicated searcher? Is it available to a technically competent outside searcher? Is it available to police without a warrant? Is it available to someone with superadmin on the database inside Twitter? When you think about it that way, the general utility of the service should be obvious.