I have become much more disciplined, in the time I spend on all sites now. Hubpages almost took over my every spare minute, for several months until the men in white coats cam knocking on the door. I even wrote about it to see if it was just me. It wasn't hubpages is chock full of reading and writing addicts.
It can be more than a little addictive. In a good sense though. You just have to take a break every now and then. To eat, sleep and maybe talk to another human using your mouth and ears.
It is amazing how quickly face to face communication skills can be eroded.
A worrying trend that I have seen in recent years, is that some people cannot converse in the real world. They seem to have lost this ability.
However they seem to be able to text forever and live on Facebook.