Just in case of my experience, hubpages are most effective way to build traffic. You will not find any lens come directly under google search result but you can find a hub on front page. It does mean google loves hubpages than others. Thinking of ezine or lens, it is proved the hubbers of hubpages really can drive the traffic quite easily. You make some hubs on hubpages, get the traffic from google and then divert them to your site. Hubpages hubbing is very simple task and have most convenient interface to operate. If keywords can be matched properly, hubpages can really help you boost the business. You can feel that google itself promotes hubpages!