"Sledgehammer spending" really bugs me. It says "we didn't exercise any brain cells to figure out what our purchase is actually worth, we're just throwing money at the wall because we think we can". Investors should scream at stuff like this. How many things could millions of extra dollars buy? For one thing, maybe they could have acquired 4 or 5 additional companies, patents or other IP. If there was any chance that…
As a MSFT shareholder I have no problem with them doing this given that Yammer had between 50-100 million in revenue last year and dominates their market.