I just attended a fantastic, standing room only SXSW panel titled "Why Social Ads Work. Ignore Facebook Naysayers [http://schedule.sxsw.com/2013/events/event_IAP14803]" with Kurt Abrahamson, the CEO of ShareThis [http://www.sharethis.com/], and Brandon Rhoten, the Director of Digital Marketing for the Wendy's [http://www.