1. A method, comprising steps of: receiving and storing interest keywords of a user, the user having a subscription to a unified alerts service platform accessible over a mobile network and offering alerts service messages with alerts contents from a plurality of content providers; receiving, by the unified alerts service platform, the alerts contents from the plurality of content providers, the alerts contents including topics of interest to multiple users and being available for distribution from the unified alerts service platform to the multiple users; filtering, by the unified alerts service platform, the received alerts contents based on the stored interest keywords of the user to identify alerts contents of interest to the user from among the received alerts contents of the plurality of content providers; and sending, from the unified alerts service platform to a mobile terminal device of the user via the mobile network, one or more messages including the identified alerts contents of interest to the user, without sending the received alerts contents that are not identified.