Link rot
the internet version of a sign pointing to some place that no longer exists
Flash of unstyled content
when a user interface temporarily gets stripped of its styling
Digital hoarding
stockpiling folders and files of digital content
Dunbar's number
the 150 people in your life
Namespace pollution
giving variables names that can easily collide with others
Alderson loop
when an exit out of a loop exists but only with great difficulty
Metcalfe's law
the more something gets used to more useful it becomes