Sorry, LinkedIn: The 11 biggest tech mergers in history almost all had terrible endings

The new era of the tech supermerger is upon us.

In fall 2015, Dell bought EMC for $67 billion - the biggest pure-technology merger and the second-biggest tech deal ever.

In June, Microsoft shelled out a whopping $26 billion for LinkedIn, making it the priciest company the tech titan has ever bought.

Silicon Valley figures like investor Marc Andreessen and Salesforce CEO Marc Benioff think it's a sign of things to come.

But while LinkedIn CEO Jeff Weiner might be enjoying his champagne, it might be time to take a walk down memory lane and remember the ghosts of mergers past. Only a few were winners. The rest resulted in depressed share prices, corporate confusion, and layoffs.