Group 4 - DeBugging

 *   Not QA
 *   Typically retained for a shorter timeframe intended to address realtime issues
 *   Due to the nature of the issue, more variables are needed
 *   Reactive/unforeseen (issue usually raised through a user, site, advertiser, scanner, report)
 *   Selective progression (retention variable)
 *   No substitute
 *   Protocol is not enough – need more (I.e. Cookie) guiding principle – if you don't need , don't collect
 *   Needed by all third parties (ad, analytics, content providers)