I would imagine it's not so much the internet itself, but what you can do with the internet.
I know people who are addicted to WoW, but not the internet necessarily.
For me the internet is like heroine. I seriously have a problem.
"If I take death into my life, acknowledge it, and face it squarely, I will free myself from the anxiety of death and the pettiness of life - and only then will I be free to become myself." ~ Martin Heidegger
I'm also addicted to reading - jewelry - and coffee.
I'd say it's no more of a problem than any of those things. REading's worse because no one ever says that's a concern - it's encouraged.
Overall - I think WHAT you read/do is more important than that you do it at all or do it for a long period of time. I read news, research and debate . . . I'm more intellectually stimulated than a college student (which I also am). The things I might put off like home improvement and cleaning are mindless but necessary chores that can truly dumb a person down if that's all they ever do with their time.
In fact - as a stay at home mother - I started debating/researching things on my own so my brain wouldn't just rot away. . . and I'm much better off for it all, too.
A screaming comes across the sky.
It has happened before, but there is nothing to compare it to now.Pynchon - Gravity's Rainbow
I read a pretty informative good book last week, dealing with human psychology and dysfunction. It addresses the human tendency toward "projection" of negative interaction toward others, the need for human communication in general. One of the chapters in the book dealt with the use of writing down thoughts, uniterrupted by feedback from others, as a useful means of therapeutic activity for the individual. It made me realize that this is why I like to participate on forums such as this one. I can organize my thoughts, and express ideas, which keeps me in touch with a more objective frame of thinking, rather than getting wrapped up in emotive responses toward people who like to stir the pot. Not saying that I don't have emotional responses, but the method of interacting seems to promote a more measured response. It think it's the same reason that people like to write letters. It's a chance to create and express what is authentic.
"God is the name by which I designate all things which cross my path violently and recklessly, all things which alter my plans and intentions, and change the course of my life, for better or for worse."
-C G Jung
I can talk to most people casually in the real world but have a tendency to cut them off sooner, because of how quickly they begin to expect things from you.
Einstein, "science without religion is lame, religion without science is blind."