A method of providing emergency warnings to a user comprising: a. filling and maintaining a database of user's data by; i. receiving registration data from a user by transmitting product data information to the user following a request therefor from the user in the form of a product code sent by SMS from the user's mobile phone, wherein users are identified in the database by their mobile phone numbers derived from their respective SMSs; ii. generating a personalized user-environment comprising a dynamically generated personal WebPage; ii(a) inviting the user by SMS to go to a website; ii(b) giving the user access to the personal WebPage upon insertion of said mobile phone number on the website; iii. requesting HSS-data of the user by means of the personal WebPage using the Internet, the HSS-data being chosen from: phone numbers, particular geo-locations of interest such as home, work or family and the contact address; iv. storing of the HSS-data of the user together with the user's registration data in the database; v. maintaining the database by checking the HSS-data when a user makes contact with the personal WebPage; b. selectively sending an emergency warning by; i. receiving catastrophe information including geographic location affected by the catastrophe, and information about the catastrophe; ii. determining which of the users are within the geographic location affected by the catastrophe by geo-locating the users whose phone numbers are contained in the database through their mobile phones; iii. sending a personalized warning based on the information about the catastrophe to the mobile phones of users who are determined to be in the geographic location area affected by the catastrophe. a. filling and maintaining a database of user's data by; i. receiving registration data from a user by transmitting product data information to the user following a request therefor from the user in the form of a product code sent by SMS from the user's mobile phone, wherein users are identified in the database by their mobile phone numbers derived from their respective SMSs; ii. generating a personalized user-environment comprising a dynamically generated personal WebPage; ii(a) inviting the user by SMS to go to a website; ii(b) giving the user access to the personal WebPage upon insertion of said mobile phone number on the website; iii. requesting HSS-data of the user by means of the personal WebPage using the Internet, the HSS-data being chosen from: phone numbers, particular geo-locations of interest such as home, work or family and the contact address; iv. storing of the HSS-data of the user together with the user's registration data in the database; v. maintaining the database by checking the HSS-data when a user makes contact with the personal WebPage; i. receiving registration data from a user by transmitting product data information to the user following a request therefor from the user in the form of a product code sent by SMS from the user's mobile phone, wherein users are identified in the database by their mobile phone numbers derived from their respective SMSs; ii. generating a personalized user-environment comprising a dynamically generated personal WebPage; ii(a) inviting the user by SMS to go to a website; ii(b) giving the user access to the personal WebPage upon insertion of said mobile phone number on the website; ii(a) inviting the user by SMS to go to a website; ii(b) giving the user access to the personal WebPage upon insertion of said mobile phone number on the website; iii. requesting HSS-data of the user by means of the personal WebPage using the Internet, the HSS-data being chosen from: phone numbers, particular geo-locations of interest such as home, work or family and the contact address; iv. storing of the HSS-data of the user together with the user's registration data in the database; v. maintaining the database by checking the HSS-data when a user makes contact with the personal WebPage; b. selectively sending an emergency warning by; i. receiving catastrophe information including geographic location affected by the catastrophe, and information about the catastrophe; ii. determining which of the users are within the geographic location affected by the catastrophe by geo-locating the users whose phone numbers are contained in the database through their mobile phones; iii. sending a personalized warning based on the information about the catastrophe to the mobile phones of users who are determined to be in the geographic location area affected by the catastrophe. i. receiving catastrophe information including geographic location affected by the catastrophe, and information about the catastrophe; ii. determining which of the users are within the geographic location affected by the catastrophe by geo-locating the users whose phone numbers are contained in the database through their mobile phones; iii. sending a personalized warning based on the information about the catastrophe to the mobile phones of users who are determined to be in the geographic location area affected by the catastrophe.