A method of displaying information items, the method comprising: determining a ranking score for each of a plurality of information items based on a history of votes received for each of the information items, the determining comprising: assigning a value to the information item for each vote received in respect of that information item, assigning a weight to each value as a function of the recency of the vote, and calculating a score for each information item, the score being calculated as a first sum across all votes of the product of the value of each vote with its assigned weight, divided by a second sum of the weights across all votes; determining, responsive to a first serve request and based on at least one criterion, at least one of the information items to be displayed at a client device; and transmitting to the client device code executable by a browser application to display the at least one information item based on the ranking score.