If you own a phone, a television, a radio or a tablet computer, you really need to understand spectrum. Companies like AT&T, T-Mobile, Sprint and Verizon want to get access to as much of the spectrum as they possibly can in order to build networks, get customers and make money. That effort to acquire spectrum was at the heart of the failed acquisition of T-Mobile by AT&T. And it’s at the heart of a proposed deal between Verizon and a consortium of cable companies. Also, IKEA releases a series of web videos, complete with sing-alongs.

The advertising arm of Google is getting a lot of heat lately about tracking people who use Apple’s Safari and Microsoft’s Internet Explorer web browsers. Safari does allow for some cookies to be placed on users but only from the site that they’re actually visiting, and Safari is not supposed to accept advertising cookies. There’s now a class action lawsuit against Google from a group of Safari users. Also, another installment of Tech Report Theater.

A medical breakthrough in Belgium could provide for new possibilities in cosmetic medical work. A patient had a severely infected jaw and it had gotten so bad it needed to be replaced. Dr. Jules Poukens tried an alternative approach: 3D printing. It’s a relatively new technology that has been making great strides recently. Fundamentally, it’s just like regular printing except instead of an image, you make an object. Also, taking a look at the PlayStation Vita.

Congress is debating a cybersecurity bill that would make the Department of Homeland Security responsible for evaluating and regulating companies that are considered critical to American infrastructure. But the bill has a lot of critics. Also, we hold a three-part tech funeral for technologies that have passed into the spirit realm.

Scientists working at the Massachusetts Institute of Technology have successfully tested a system to deliver medicine into a patient’s body thought an implanted chip. This means that the patient doesn’t have to worry about filling a prescription or remembering to take medicine at the right time — it’s all done for them. A timer in the chip knows when to release the medicine or can even be set up to sense when the body needs a new dosage. Also, another edition of the Robot Roundup.

Apple has announced that it will change the policy on apps and will require the app developers to get user permission before grabbing data off the device. That means that an app like Twitter has to get your permission before it looks through your address book to find out which of your friends is also on Twitter. The rules were changed because some apps were exporting the data to servers, where the info could remain for months. Also, the U.S. Senate has introduced a cybersecurity bill aimed at protecting computer networks in the U.S. from attack.

The Massachusetts Institute of Technology is offering a free online class and everyone’s invited and admitted. The class, Circuits and Electronics, is a full-strength MIT course and the first in what is intended to be an ongoing educational effort called MITx. At the end of the program, successful students will get a certificate. Not an engineering degree, mind you, but still something. What does this mean for education? Also, a deeply weird and highly entertaining video game on YouTube.

Remember MySpace? Not all that long ago, it was out on the bleeding edge of social media. It had 76 million users, everybody loved it, musicians flocked to it, it was the place to be, Rupert Murdoch’s News Corp. paid nearly $600 million for it. And then — crickets. But now, MySpace is showing signs of life.

Windows still runs more than three-quarters of the world’s PCs. And the upcoming Windows 8 is about Microsoft using that existing heft to power its way onto smaller screens too. Online opinions differ wildly on whether consumers will dig it, but one thing is for sure: Windows 8 looks dramatically different from the Windows that you’re used to today — Microsoft is trying to reinvent Windows for post-PC era. Also, we construct a boffo campaign speech from nothing but the titles of songs in President Obama’s Spotify playlist.