The internet itself is neutral – its just a virtual space where information can be found. Its what you do on the internet thats a problem. If you have a taaveh for pornography, you should probably stay off the internet.
Personally, I dont visit any sites that I consider “treif” – most of what I look for on the internet relates to my day to day life. For example, now that my son is eating solids, I have been looking up information on what foods I can serve him at what month. This information is available in books, but this information is more updated and easy to get. Instead of purusing the library, I can get the information almost instantaneously.