1. A method for determining priority of a data item, the data item being sent from at least one first terminal or service associable with the first terminal to a second terminal and evaluated using a set of first rules associable with the sender of a data item and a set of second rules associable with the recipient of a data item, wherein the method comprises steps of a. associating the data item with at least one tag characterizing the data item, b. maintaining weight factor for the data item using the set of first rules and the value of the at least one tag, c. adjusting the weight factor of the data item using the set of second rules and d. rendering the data item on the second terminal utilizing the weight factor information.