I know this has been asked a million times but it's hard for me to get a solid answer. I'm looking up some competitors and it seems that most of the links they have built are reciprocal. First of all, I thought that reciprocal linking wasn't supposed to work anymore? secondly, it's pretty obvious that any links they are hosting on their site are hidden from spiders. What's the deal? isn't that the most obvious trick in the book?