Due to the unedited nature of premium services, it is typical for them to showcase programming that includes large amounts of profanity, sexual activity, nudity, graphic violence and other adult content (the inclusion of any such content depends on the program, as services may also include content that is at least partially, if not entirely, devoid of material that may be inappropriate for some viewers). To notify viewers of program content, most premium channels air advisory bumpers immediately before each program, mentioning the program's rating (this typically does not apply to live sporting events) and program content information.