There are two articles that are direct hits on managing information for the individual and allowing the individual to use the information when they needed it and share it as needed. Yes, this is in line with the Personal Information Cloud.
The first article, The inter-personal information manager (iPim) by Mark Sigal about the problem with users finding information and how the can or should be able to then manage that information. There are many problems with applications (as well as the information format itself) that inhibit users reuse of information. In the comments of the article there is a link to products that are moving forward with information clients, which also fit into the Personal Information Cloud or iPIM concept. (The Personal Information Cloud tools should be easily portable or mobile device enabled or have the ability to be retrieved from anywhere sent to any device.
The second article is from the MIT Technology Review (registration required) titled Trash Your Desktop about Mitch Kapor (of founding Lotus Development fame) and his Open Source project to build Chandler. Chandler is not only a personal information manager (PIM), but the tool is a general information manager that is contextually aware. The article not only focusses on Mitch and the product (due late 2004), but the open and honest development practices of those that are building Chandler at the Open Source Application Foundation for Windows, Mac, Linux, etc. distribution.