Identifying valuable customers, debates over the true device category of the tablet and our tendency to over-complicate matters in the workplace were just three of the topics, among many more, covered this week at PerformanceIN.

For a momentary swoop over the rest of the week’s headlines, take a look at our top fives below.

In the news

Explained: Facebook’s “Logical”, Performance-Focused Tweak to its Click Model – “Cost per click is changing on Facebook, and in a big way.” Read our guide to find out more.  

Movers & Shakers: June 2015 – Our monthly round-up of staff movements within the performance space took a look at the most notable hires in June – a fruitful month for employees switching codes.

Instant Messaging Set to Leap Ahead of Email as Biggest Communication Channel – Email might be considered the first port of call for electronic messaging, but competition from smartphone apps such as WhatsApp and Facebook Messenger is proving a challenge to its supremacy.

Can AOL Turn Millennial Media’s Ship Around? – In the US, rumours over AOL’s $300 million bid for mobile ad firm Millennial Media brings together two radically different parties.

AppNexus in Discussions Over Stock Market Float – One of the fastest-growing ad tech firms may go public next year. We looked into the story behind AppNexus’s rise to the top.  

Featured articles

Ones to Watch: Project A Ventures’ Top German Start-Ups – Get the lowdown on some of the hottest German start-ups with a country-specific review from Project A Ventures. 

How to Find your Business’s Most Valuable Customer – Learn about your MVC with Google performance specialist Dave Byrne.  

A Matter of Definition: Is a Tablet Truly a ‘Mobile Device’ – Mobile targeting means reaching out to smartphone and tablet users, right? Joelle Hillman argues otherwise.

Why Conversion Rate Optimisation Will Give Programmatic a Run for its Money – House of Kaizen’s Ivan Imhoff gives you every reason to believe the hype around CRO.

Video: Ken Segall on Our Problem to Prove How Smart We Are – Following his PMI: Europe keynote, we spoke with former Apple creative director Ken Segall about the wonder of simplicity in business.