I was wondering if the downloadable content for destiny can be shared between two different accounts on a PlayStation 3?
Most PS3 downloaded content can be shared by other accounts on the same console where it was downloaded, as long as it's one of the two activated consoles associated with the downloading account. There are some rare exceptions, for example, DLC for Dungeon Siege III the game Final Fight Double impact is available for the purchasing account only.
The other exceptions are avatars which are tied to one account and one-time content like in-game cash/loot boxes which are tied to the account who purchased them only.
Anything purchasable can never be shared between accounts. It sort of makes sense for them. They would lose a lot of money if it was possible...