If you're using LOTF, go back 1 or 2 pages. I gave info in another thread how to change drop rates. As for why NPC's aren't talking to you, I'd need to see your source to know why.
Can You:
-Make DB Drop Rate High (like in 5 mobs u get 2 dbs)
-Make It Possible To Talk To NPCs
-Make Your Cps and Gold decrease when you buy something
-Make UnknownMan give like 10 levels for 1 db
-Make there be alot of mobs and mob spawms in each city