There is an important shift happening on the Internet, one that started only a few years ago. There are web sites online today which work just like an application running directly on your computer. Sometimes this type of web service is called Web 2.0, or sometimes called ‘‘Cloud Computing.’’ When a chart is drawn showing a computer network, the standard symbol for the Internet has become a cloud. This symbol for the Internet is where the catchphrase ‘‘cloud computing’’ was born. You may have heard the term ‘‘Web 2.0.’’ No, there isn’t a new Internet out there; it only refers to the new type of web sites being created on the ’Net. Web sites like MySpace and our own CU site (cu.post-journal.com) are examples of Web 2.0. Web 2.0 sites have interaction with or can be customized by the user, not just the author. Normally, to run a program on your computer, say an office program — word processor, spreadsheet, etc. — you buy a box with discs that you use to install the software on your co