A group of individuals who succumb to a world view which is greater than one's self, therefore embracing a hive mindmentality in hope of achieving nerdvana.
A group of generally nerdy people. These people sometimes might be defined as hipsters, but not all of them are. They tend to date each other a lot and hate people who are not part of their nerdherd.
A group of people, a herd as such, which contains a majority of people with nerdy features. The original nerdherd originated from an all girls' school in Hackney.
"Hey is that the nerdherd?"
"nah mate that's just some wankers from that hackney downs school"
"oh. well I hear the nerdherd are really cool"
"yeh they're some fine mofo"
A large group of nerds of either one or multiple kinds, who are mutually friends. Like any gang, except that all members know calculus, have an opinion on the economy, philosophy, and will try to convert you to their OS/Browser/Console. And are less likely to be able to take you in a fight.
Sometimes acting as a guild with a monopoly on intellect, and other times as an average bunch of friends.