The internet is neutral. It's neither good nor bad. It can be used for great things (helpful resources, connecting with friends, information, etc.) and destructive things. What's bad is the sinful heart.
PORNOGRAPHY is everywhere on the web. The painful facts are that most men have viewed porn, do view porn and will use porn (the numbers of women are growing too).
I think every Christian should be proactive in protecting themselves and their families from the harmful uses of the internet. Therefore I recommend to you a helpful tool like COVENANT EYES.
Covenant Eyes is a monitoring software and a filtering softer (two options and two plans) that you put on your computer. I have been using this for more than 4 years. Every website I view is sent to a log and then to an accountability partner (or partners) of my choice. The serve can read if the site is sexually explicit and will highlight it and log it in a special section for the one who keeps you accountable.
Please check it out Covenant Eyes.