Yeah I spend a good 85% of my day on the internet. I don't think it's a waste though. Goodness, it's far better than dealing with people all day long! Ha!
There's times where I waste my time online though like when I spend time chit chatting on here with the /off-topic/ channel while I wait for something else to happen in life

Cheers!
Be careful if you really spend excessive amount of time at the computer. This is an indication for being addicted to internet. Which is dangerous for all of us.