A WebmasterWorld thread asks how can one judge and report on the SEO performance metrics when ranking reports are dead, when not provided is surging, when we have knowledge graph, Google+ and so on?
If we cannot tell a client that they went from position A to position B, how can they measure the value of SEO work?
The answer may be simpler than you'd expect, as goodROI Greg Niland explained in the thread. You want to provide search conversions, conversions generated by search referrals.
A conversion can be anything from an e-commerce sale to downloading a white paper or clicking on a contact us form.
SEOs need to get off the mindset of measuring their value on ranking for a set number of keywords and onto the mindset of increasing conversions through search.
Forum discussion at WebmasterWorld.