Avoid cookies because they contain personal information. If the computer is shared then the next user may receive preferences which belonged to you. In litigation, people may gain access to your cookies. For public bodies, cookies many represent public records that must be disclosed. However system benefits make it more difficult to provide an efficient service.
Software focuses on effectiveness, the web also adds system benefits.
Novelty frequently creates performance problems, it can often be unreliable and may impair usability. Participation software creates major performance problems, it is often unreliable, can easily break trust, and may have poor usability. Emotional involvement can distract from attention, reducing usability. Comfort reduces performance, but improves usability. Original clipart and photographs copyright The Corel Corporation.