KDE 4.5 brings to the table plenty of useful, functional, innovative features. One of those very features is the Desktop Activity. Although many scoffed at the idea (even tried to get the feature pulled), those same naysayers are (hopefully) glad their requests were not followed. Why? The KDE Desktop Activities feature is a great new desktop metaphor that takes the Linux desktop to new levels of organization.
Read the full thing at http://www.linux.com/learn/tutorials/358560-kde-45-desktop-activities-brings-new-meaning-to-organization