Tumblr not working out for Yahoo!

Originally purchased for $1bn in 2013, after failing to meet the $100m 2015 revenue goal, written down:

A bit of simple arithmetic puts Tumblr’s value after these writedowns at about $290 million. This is not only less than a third of its purchase price, but it’s also less than the value of Tumblr’s assets when it was acquired two years ago.

Source: Marissa Mayer promised “not to screw up” Tumblr, but she totally has

How’s Microsoft doing with Yammer?

If we look at it from Yammer’s perspective, it’s been a good year. Being part of the Microsoft family has helped it grow its total user base by 60% in the last 12 months to almost 8 million users, and its number of paid networks has grown by 200%. Plus, Yammer’s 2012 full year sales almost tripled year over year, helped by a stellar Q4 performance.

Microsoft & Yammer: still a long way to go