Signs of bogus Twitter user
FOLLOWS MANY USERS
Fake computer-generated accounts tend to follow a huge number of users, sometimes as many as between 1,500 and 2,000.
The ratio between the number of users a Twitter account follows and the number of followers the account has is telling. The higher this ratio, the more likely the account is fake.
Fake accounts usually have very few tweets, sometimes even none.
MISSING PROFILE DETAILS
A real account would typically have a profile image and a background image, with the location and time zone set.