Early in vanilla the mobs in Silithus didn't drop any loot, but they gave great XP for that final push from 55-60, so my rl friend the soon-to-be Banana Boyz raider spent a lot of time down there just grinding mobs for nothing but XP. With no-one around and iirc, no flightpath in the zone until they added the now-defunct one right at the entrance from Un'Goro. So it was pretty tranquilos and just straight-up grinding business while it lasted.
Speaking of which - the little NE (?) outpost at the entrance to Silithus from UG used to be a flightpath!