I could be wrong, but I think what Dubstep may be implying here [and if you're not, I apologize, but this is what I am saying too], is that once you do all of the non-repeatable quests, there are VERY few, IF any quests that allow you to get silver even, that are repeatable. The rest are for small numbers of bronze for ridiculously tedious and long-term quests.
[Also, Im /dying/ at your signature Raksha. LOL]