A user that seems to have a one-to-one relationship to a human who wants to use Twitter in the ordinary way. There are many other kinds: Test users created by T

A user that seems to have a one-to-one relationship to a human who wants to use Twitter in the ordinary way. There are many other kinds: Test users created by Twitter staff or other companies, dormant users, spambots, and so on and so forth. If you want to make good decisions about what to serve, it helps to analyse the traffic logs, separate the authentic users from the rest, do lots of analysis on authentic users only, and then make implementation decisions based on the analysed behaviour of the authentic users.