I searched and couldn't find anything on it, but I had some questions for you and I shall format it short and sweet how you like it =P

1. Is negative and unholy damage the exact same mechanically?
2. If so, are there any situations where they wouldn't be?
3. Do casted spells by necromancers or ap's count generally as unholy, if not generally, any of them specifically?
4. If so, does Forsaken Thoughts technically help against them to a degree then?
5. Forsaken obviously isn't resist holy/unholy. Would you be generous enough to give us numbers on the redux? Is it greater than 15%?

Thanks nep!