Abstract: A method is disclosed performed by a system (300) of a data communication network, the system comprising a database (310), a first and a second network node (321, 322), the database (310) operating as a server with respect to the first and the second network nodes (321, 322) operating as clients to the database (310), the system handling data posts comprising one or more data values of different categories and a unique ID of the data post. The method comprises sending, by the first network node (321) to the database (310), a request for adding a first data value and a first ID to the database (310), storing by the database (310) the first data value and the first ID, sending, by the database (310) to the second network node (322), a message comprising the first ID and the first data value and storing, by the second network node (322), the first ID linked to the first data value, thus making the data stored at the database (310) searchable at the second network node (322).