It's hard to image much of a use for chat services, but they are popular amongst some college students and people who avoid sunlight and garlic. They are stored within the browser's folder. A web site that creates such a cookie can later use it to identify the user as a registered user, or the cookie might store the user's preferences. Data Lock Data Lock means that your data is locked down, and not moveable by you. If you have all of your email addresses in a proprietary file format, and there's no export function, then you experience data lock.
Vendors love to get customers into a data lock, because it's very hard to switch away.
Always fear data lock. Digest A summary of List messages, typically sent out every few days to digest version subscribers. Uses a standard phone line, but, incredibly, you can still use the line for voice even while your computer is working over it. A frame means that a single window is divided up into rectangular portions, each of which holds a separate page. Although frames can be very useful, particulary for holding menus and controls, they can also be very confusing.