If you're worried about non-neopets originating sites then a good way to stick to the good ones is to go to a site you already know (like ppt) and see if they have any affiliates

Decent sites never link to bad ones. Also if it ends in ".com" it's usually a safe bet too but affiliates is definitely the way to be sure =)
Here's the ppt affiliates page if you're interested:
http://www.pinkpt.com/index.php?page=neolinks *goes to look at petpages* x)
Edit: of course I just realised you probably meant you hesitate to type them just because they're not neopets urls...heh, oops