Yahoo is busting a move and has nabbed Marissa Mayer, an engineer and one of the earliest employees at Google, to be the company’s new chief executive. Yahoo has had a rough time of it in the CEO department the past year, so here’s hoping Mayer gets the ship back on course. (Maybe give Flickr a tune-up? Pleeeease?)

A lot of people watch TiVo, but who knew TiVo was watching back? The digital recorder company said this week that it was buying the advertisement research company TRA Inc. for about $20 million. The TRA technology allows networks and advertisers to measure the effectiveness of advertisements on television and which networks sell stuff the best. (Hey, does the old TiVo 30-Second Skip trick still work?)

Microsoft continues to churn out announcements and updates this summer. This time, the news concerns the company’s flagship business software, Microsoft Office. A public beta preview version of the new software, Office 2013, is now available for the curious and the company is also revving up its cloud version, Office 365, to draw users away from the likes of Google Docs and Apple’s iWork/iCloud combo.

And now, a paragraph about robots — because the PTJ blog here has not had a paragraph about robots in awhile. Navy scientists are working with several research institutions with an ultimate goal of to creating mine-sweeping autonomous robots for dangerous missions under the sea. The Massachusetts Institute of Technology is in on the project with some spiffy new algorithms and there’s more information and some cool video on the MIT site.

Valve Software is dedicating a team to bring the Steam gaming service to the Penguin Nation. A blog post on the Valve site states that the team’s current goal is to get the Steam service fully working on Ubuntu Linux 12.04, the system otherwise known as Precise Pangolin.

Samsung may be having trouble with Apple in the Federal courts, but the South Korea-based electronics company is winning in the people’s court of retail sales. According to a Reuters poll, from April 1 to June 30, analysts estimate that Samsung had sold over 50 million smartphones, overshadowing Apple’s projected sales of 30.5 million iPhones. Keep in mind that an iPhone 5 looms and people may be holding back on Apple purchases in anticipation.

Also, in anticipation by Batman fans everywhere: The Dark Knight Rises, and he rises this weekend in movie theaters. The Los Angeles Times is predicting big box office for the third film in the Christopher Nolan/Christian Bale take on the Caped Crusader. Early reviews have been largely positive, but there was a bit of a dust-up for those expressing more negative views on the film. Please folks, leave the explosives to the mine-sweeping robots with their fancy MIT algorithms, okay?