Yahoo's purchase of hot blogging platform Tumblr, which it announced Monday, was big news for the hundreds of millions of folks who already post to the site or check in to follow those who do.

Yahoo's purchase of hot blogging platform Tumblr, which it announced Monday, was big news for the hundreds of millions of folks who already post to the site or check in to follow those who do.

In recent weeks, Google Glass has been distributed to its first group of beta testers outside Google and in the real world. As the pool of new smart-glass wearers grows, they are feeling out the etiquette of using the new technology.

For two years, Google has pushed its Google+ as more than a social network or cool video-chatting tool. This week, it is working to hammer home that point with a spate of new features.

Crowd control took on a whole new meaning last night as a room full of partygoers in San Francisco were given power over a cocktail-making robot controlled by their smartphones.