Any mail client has it. Trash can. Deleted items. They all call it something different, but my God, it's right there. A half-terrabyte of data doesn't mean you save every freakin' Twitter message that comes your way. The Seattle Supersonics management might have gotten away with merely being hated in Seattle for taking their team, rather than taking their team and lying about it, had they heeded this very advice.
We already heard about e-mails between Clay Bennett and Tom Ward about being a "man possessed" in bringing the team to Oklahoma City. Now another owner, Aubrey McClendon, had some damning electronic messages be read aloud in court: