A method for sending prompt information to Social Networking Services (SNS) community users comprises the following steps: acquiring the inactive users in an SNS community; acquiring the friend relationship chains of the inactive users; acquiring the active users in the friend relationship chains; acquiring the writing operations of the active users; sending prompt information related to the writing operations of the active users to the inactive users. The method described above for sending prompt information to SNS community users can increase the success rate for activating the inactive users, and thus effectively reducing the loss of the SNS community users. Besides, a system for sending prompt information to SNS community users is also provided.
An alarm clock comprises at least one sensor for detecting a body activity level of a human being and is provided to produce a sequence of alarm signals. Each alarm signal within said sequence is suppressible on the detection of a predetermined body activity level. The body activity level required to suppress an alarm signal increases with each subsequent alarm signal within said sequence. A corresponding method for controlling a wake-up alarm comprises the production of a sequence of alarm signals, each alarm signal within said sequence being suppressible on the detection of a predetermined body activity level of a human being, wherein the predetermined body activity level required to suppress an alarm signal increases with each subsequent alarm signal within said sequence. The body activity level of a human being is detected during said sequence, and a present alarm signal is suppressed when the body activity level presently detected is greater than the predetermined body activity level required to suppress the present alarm signal.