FAIL pictures - INTJ, ENTP
Unintentional virus warnings - ExFx?
Posting "first" - xSxP?
Posting "gay and fake" in response to images - IxTP
Posting "I'd fuck it" - ????
Accident videos - xSTP?
Demotivationals - NT?
Posting links to informational websites - INTP
Being helpful in tech forums - INTP
Being helpless in tech sites .. ?
Can't figure out more, though there's tons of fun things to mention