There is an ongoing, never ending, ever expanding quest all players of Destiny are participating in. Some have been in it since the beginning, some have started the quest later than others, some have started the quest faster than others, some players are joining the quest with codes to achieve things, some players are in the quest for fun, some players are in the quest for business...
The QUEST for Exotic items is never ending...
So far I've found a few things that help.
Walk through for all Exotic Bounties
http://destinygamevideos.com/?p=1252
Fastest Way To Get Rare Items & Level Up
http://destinygamevideos.com/?p=1300
Farming Ascendant Shards & Energy
http://destinygamevideos.com/?p=1294
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The Quest goes on