http://www.crunchbase.com/company/cue
http://www.nytimes.com/2013/07/30/technology/apps-that-know-... (July 2013)
And a promising TC article earlier this year: http://techcrunch.com/2013/01/02/too-much-email-please-stop-...
http://www.crunchbase.com/company/cue
http://www.nytimes.com/2013/07/30/technology/apps-that-know-... (July 2013)