Simplify the following text for a Grade 6 native English-speaking person.
Original: The article said that Essjay spent some 14 hours or more a day on Wikipedia but was careful to keep his online life a secret from his colleagues and friends .
Simplified: The article said that Essjay was on Wikipedia some 14 hours or more a day . The article also said he was careful to keep his online life a secret from his co-workers and friends .