Slack users I know, including me, love many things about the service. As the company likes to brag, it's fast, it's transparent, and it's great for brainstorming.

Slack spread through businesses like wildfire, initially in the tech and media sectors, but now much more widely. At its public launch in February 2014, it had 17,000 users. As of April 1st, 2016, that number had rocketed to 2.7 million daily active users.

With Caavo, you don't have to know the device name, the network name, the service name. Just which show you want to watch, regardless of whether it's live, recorded, downloaded or streaming.

Big screens helped propel Samsung to top-tier prominence and helped iPhone sales explode a few years later. But for many, including myself, the biggest-screen models just weren't practical, because their overall size made them too large, too bulky, and too heavy.

Amazon's 'Twitch' appears to be creating a service that operates like Twitter.

I was very proud to be at 'The Wall Street Journal'. I have nothing bad to say about it. I had a great run there. In what turned out to be the final years of my tenure there, 'AllThingsD' occupied me more and more and was much more fun.