Originally Posted by surgui

Link building is a numbers game and if the sites linking into you start falling over you have to replace them. That starts to cost. So why trade links with a webmaster who is using a throw away domain when they to link back to you? And if he is not using a throw away domain, you dont want to give him an outbound either. He is going to make a mistake sooner or later. He is going to get zapped and thats bad for your business. Trading doesn't add up except in the short term. On the other hand if its the traffic you are after you can always no follow the links and remove that possibility of long term penalties.