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Network World - The scoop: OnLive Desktop Plus (iPad app, plus service), by OnLive, Inc., about $5/month.
What is it? The OnLive Desktop is an app for your iPad that gives you a virtual Windows 7 desktop environment, as well as Office 2010 apps (Word, Excel, PowerPoint), Adobe Reader and other basic Windows apps (Calculator, Notepad, Wordpad, Paint, Sticky Notes).
Upgrading to the Plus service gives you access to a virtual Internet Explorer browser, which lets you surf the Web, including the ability to watch Flash-enabled videos, something the regular iPad doesn't do.
Files created via the app are stored in the cloud by OnLive (2GB of free storage), and can be downloaded via your PC (you can also upload other files to the cloud storage area and access them within the iPad app).
Why it's cool: Having a Windows 7 environment on your iPad adds another component for users (especially mobile travelers) who want to "ditch their notebook" for the tablet. The Office apps allow for content creation via the iPad that was only possible before with third-party apps. The Internet Explorer option is good if you want to view Web sites that use Flash.
The app provides access to other apps, including four "Windows Touch Pack" games/apps (Blackboard, Garden Pond, Rebound and Surface Collage), but it's unclear whether you can install additional programs within the virtual environment. For example, when trying to view Netflix content via the IE browser, I couldn't get past the Silverlight plug-in install process. OnLive also says any changes the user makes to the Windows environment are not saved, except for IE browsing history and bookmarks.
The app also works better if you have a Bluetooth-connected keyboard on your iPad, rather than relying on the Windows virtual keyboard inside the app. Most users interested in this as a way to "ditch their notebook" will likely already own an iPad keyboard for the purposes of content creation.
There's also some very cool behind-the-scenes technology going on. The data connection between the OnLive servers and whatever site you're accessing is super-fast. OnLive says that "only the top layer of the currently visible part of a website is ever sent over the local connection." This can actually reduce Web browsing data usage for 3G/4G users, compared with the data usage that occurs on a normal 3G iPad, since less data is being sent over the mobile network. OnLive does recommend having a 1.5M to 2Mbps broadband connection, however, which could potentially create issues for 3G users, but not Wi-Fi home users with a modern broadband connection.
Some caveats: This is not a complete OS integration between Windows and the iPad. If you have to do something like check your corporate email on the iPad, you leave the Windows virtual environment. Because you're saving files to the cloud, there's no local storage capability for documents on the iPad. It also appears that you can't install additional apps or even plug-ins to the environment - I tried accessing my Netflix Instant Queue and failed to install the Silverlight plug-in that IE required (another reason I wish OnLive would add Google Chrome or Firefox to the mix).