Question
 

What are bloody runs?

Well, bloody runs are basically were (mainly sorcs) go into act5 and they walk right out of town and kill all the monsters up the the waypoint, then make a new game...

They used to be the most popular runs, then came cow runs ;)

yes, Bloody and Cow runs are the most popular far away.

For hardcore games, I used to run Sewers too.

Yea, I like sewers sometimes too, its alot of fun for lower lvls ;)