2. The low levels' spawns for monsters in games. Usually these areas are crowded, and the noobs in the area are reffered to as "one big noob herd"
3. A low level guild or clan.
Gamer B: "yeah lol, it's a noob herd"
2. Gamer A: "Let's goto worms"
Gamer B: "And do what? Watch the noob herds?"
3. Gamer A: "I'm gonna put my new char in that guild over there"
Gamer B: "lol, you gonna join the noob herd?"