Target and Amazon are at war. Target is going to stop selling the Amazon Kindle in its stores. The issue seems to be a practice known as “showrooming.” That’s when a web retailer like Amazon encourages customers to go to a store like Target, scan the barcode of an item with a smartphone, then see if they can get it cheaper online. Maybe buy it from Amazon while they’re standing in Target. Showrooming is on the rise, and retailers are getting nervous. Also, email and the stress levels of workers in an office environment.

Venerable educational institutions like Harvard and MIT are giving away education online for free in a new partnership called Ed X. Classes start in the fall — online. Students do five to 10 minute videos, interlaced with online exercises that give instant feedback. There’s no emails — it’s all browser-based and online. And at the end, if you master a subject, you get a Certificate of Mastery. Which is neat but not quite a Ph.D or anything anyone’s ever heard of. So what good is it?

Facebook is helping people become organ donors. You can now go to the site, search ‘organ donor,’ find links to sign up and list yourself as a donor on your timeline. The hope is that more people sign up on Facebook because it’s more pleasant than the DMV, where you can become a donor when you renew your license. Plus, the latest in boom box technology — and there is such a thing.

New online service Wrapp debuted yesterday, and offers a chance to send gift cards from big-name stores to your friends for nothing. What’s the catch? When you download the Wrapp app, you allow it to access your data on Facebook, and then the friend who receives the gift card will also have to allow access to their data to get the money. So are we at a point where we can sell our data? For five bucks at The Gap?

Today is the beginning of Screen-Free Week, which is meant to encourage us to log off, power down and go out and experience real life instead. But it’s not as easy as hitting the on/off switch. For one, when we text and email, we get to choose the person we want to be — much of technology’s appeal is about being in control.

Walmart has just launched a new way to pay for your online purchases, with cash. Yup, non-futuristic, non-shiny, regular-old dollar bills. It works like this. You go online to order something, say some towels. Then you drive to a Walmart store and pay for your towels in cash. Once you’ve paid, Walmart will ship the towels, right to your door. Or someone else’s door if they’re a gift.

The Cyber Intelligence Sharing and Protection Act, or CISPA, seems headed for a vote on the floor of the House as early as today or tomorrow. The bill, essentially, is about easing the path for the government and private industry to share information in order to head off an online attack or deal with one taking place. The bill easily passed through committee a few weeks ago but its future appears a lot less rosy now, after a great deal of criticism has built up against it. Plus, we saddle up for the Robot Roundup.

There is yet another option for you if you have more documents, pictures, videos and what-have-yous on your computer that are taking up too much space. Google has announced Google Drive, a service that gives you five gigabytes of storage for free and offers more space for additional costs. Provided, of course, that you have a strong Internet connection. Plus, a new term to learn: liquidmetal.

President Obama chose the backdrop of the Holocaust Memorial Museum in Washington to announce a new policy aimed at punishing countries that practice violence after gathering information about citizens online. He’s signed an executive order specifically targeting the governments of Syria and Iran. The practice of using modern technology to gather data about citizens, though, is not limited to Syria or Iran — it happens in countries all over the world, including the U.S. Also on the program, we eat some Tech Vegetables.