I found out about Sorrow's Furnace and it sounds like fun, but I have a few questions about it:
1) Do groups still go here to play?
2) Is it hero/henchable?
3) From what I have seen it looks like there are 5 or 6 quests in the area. Are they repeatable or are there other things to do in the area besides those quests?
4) Is there something other than Sorrow's Furnace that I should go do?
I also thought about trying the Underworld but North America only very, very rarely has favor when I am on.