Some time ago a friend told me about QR-Codes. Before that I had already seen some of them in instant messaging avatars, without knowing the meaning of those images. QR-Codes look like this:
This is a kind of barcode like the ones that you see in the super market, but that can store a lot more information. Take a look at the Wikipedia entry about QR-Code.
An interesting thing about this format, is that there is a lot of software available for mobile phones and even windows mobile, that allows you to read these barcodes using your mobile phone’s camera. It is a nice way of sharing contacts (phone number, e-mail, URL’s) or a simple message (how about wearing a t-shirts, allowing your geek friends to read the message? 
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A nice software for Windows Mobile is i-nigma barcode reader. Just point your camera at a QR barcode, and read the message!
A nice usage of this technology is present in the Windows Mobile free software directory freewarepocketpc.net. You can browse for software in your computer, and when you want to install an application in your device, instead of connecting it to the computer to transfer the cab file, or copying the download link by hand, just point your camera at the QR-Code in the download page, and download the software using the link encoded in the barcode image, reading it with i-nigma, or other similar software.
Believe me, it works pretty well. I wasn’t convinced until I tried it by myself.
Thanks for the introdution to QR-Codes, Nelson and thanks for showing me i-nigma, André! 
Just take a look at http://connect.microsoft.com/site/sitehome.aspx?SiteID=94
“Microsoft SharedView is a fast, easy way to share documents and screen views with small groups of friends or coworkers; anytime, anywhere. Use SharedView to put your heads together and collaborate - create, convey, and communicate…across physical boundaries, through firewalls, and down to the smallest details.”
I’ve just tried it for 5 minutes, it worked pretty well, without any port forwarding or firewall configurations.
I had a lot of problems to even try to start using similar tools like Remote Assistance or Windows Meeting Space.
After some months willing to buy a Wiimote to try it in my PC, a couple of hours on front of a Wii gaming console convinced me to do finally buy it. After all, now I have some friends with whom I can play using my Wiimote! 
Some time ago I wrote a library to the Xbox 360 GamePad (based on XNA 2.0) and a demo which included a PowerPoint add-in to control presentations (targeting Office 2007). Since my GamePad was wired it was just a demo with no real-life usage.
Now I’ve done the same thing with my Wiimote. Based on the Managed Library for Nintendo’s Wiimote available at Codeplex.com, I made a simple (and uncompleted) library that raises events when each pressed/released button state changes. I’ve re-written the PowerPoint add-in to use the Wiimote. Now I finally have a presentation wireless controller (other than my mouse ).
All the presentation control is achieved using the buttons, but if you quickly move the Wiimote you also move to the next slide. This physics-based control was just a test, is not really necessary. Clicking a button is much simpler than using a movement to move forward. It is just a geek trick.
Download the Wiimote Presenter add-in.
Download the add-in source code.
You can add sample text to a Microsoft Word document by typing =rand(A,B) followed by the enter key.
A represents the number of paragraphs, and B the number of sentences for each paragraph.
Applies to several versions of Microsoft Word.
Finally it is available! 5 Gb of space available for each user. Secured by an SSL connection. Available on IE and Firefox. Attached to your LiveID account.
Store files for yourself
Using multiple computers? No problem. Store and access your personal files from anywhere online.
Share files with friends
Sharing with friends, co-workers, or family is easy when you all add and update files in a shared folder.
Share files with the world
Some ideas are too good to keep to yourself. Share them in a public folder that only you can update.
More information at skydrive.live.com
It is pretty simple! Just one shell script line of code
Learn how to do it in this blog.
