Streaming media is multimedia that is constantly received by and presented to an end user while being delivered by a provider over the Internet. The verb "to stream" refers to the process of delivering or obtaining media in a continuous manner from a particular source. Streaming refers to the delivery method of the medium, rather than the medium itself. Distinguishing delivery method from the media distributed applies specifically to telecommunications networks, as most of the traditional media delivery systems are either inherently "streaming" (e.g. radio, television) or inherently "non-streaming" (e.g. books, videotape, audio CDs). There are challenges with streaming content on the Internet. For example, users whose Internet connection lacks sufficient bandwidth may experience stops, lags, or slow buffering of the content. And users lacking compatible hardware or software systems may be unable to stream certain content. With the use of buffering content just a few seconds in advance, the quality can get much better.