File-sharing, check
Game playing, very little.. well only if poker and betting are included, then some.
Chatting, check if forums, PMs are included
E-mail, a lot at work, very little privately
Depressed, no.. or very light due to stress caused from lack of sleep/non existant sleep cycle.
Severe insomnia, check

File sharing - always.

Game playing - yes, if playing in the Arcade here counts. No RPG.

Chatting - same as Sleepless...only forum PMs.

Email - comes & goes, but not a lot generally.

Depressed - no. But again, like Sleepless I have a problem with insomnia