I have used 3waylinks and would say that it is over-all a good service. Honestly I think Jon's other service OneWayLinking.net is far superior since it has greater flexibility (point links to inner pages, as well as more variations for anchor text), and also the links are permanent (if you drop out of 3WL you lose all the links).
i make reviewed about that service and overall sais 3way service are nice..workking great to make backlink..
Anyone have any updates with these services? All the posts were from 2008 besides one recent one in 2010. Does anyone still use these services and get results?