If your asking what sites dont have malware on them ever I'd say
None of them are a 100% safe a 100% of the time as good sites get hacked,change ownership etc
The internet is awash with malware and not just on porn sites
How to Block Bad Websites
Updated Wed, 10/06/2010 - 19:36 by bcman
Anonym zu www.techsupportalert.com/content/how-block-bad-websites.htm
You can always check sites before you try them
http://www.mywot.com/
Personally i tend to surf anywhere due to the fact i run my browser(firefox)sandboxed
Its not a 100% guarantee but its stopped most infections,then I can simply delete the sandbox once finished and their gone
Also helps if you run a blocking list of known badsites so you dont stray into them by accident but bewarned this is so thorough..basically it blocks about 60,000+ known bad sites...their definition of bad is very far ranging from the very minute adware to full on malware
all the streaming video sites were off limits...if your really paranoid...
http://www.mvps.org/winhelp2002/hosts.htm
I used to use the 127.0.0.1 host blocking facility of spybots search and destroy
Was much easier to turn on and off and as a spyware remover was excellent as a backup when malwarebytes & superantispyware had been disabled...seems the one the reviewers now dislike
isnt the target of the criminals
http://www.safer-networking.org/en/tutorial/index.html
Another unobtrusive prevention program which you wont even know is running
The 4 Principles
1.Must not interfere with what you do
2.Must co-exist peacefully with other software
3.Must be simple to use, powerful, and effective
4.Must be ... free?
Spywareblaster...simply a bad list that prevents them installing on your system
http://www.javacoolsoftware.com/products.html