1. A method of determining a creation time of a target page, the method being executable at a server coupled to a communication network, the method comprising: creating a page network comprising a plurality of pages including the target page and a plurality of links, each link of the plurality of links having a source page and a destination page, each of the source page and the destination page being one of the plurality of pages, each page of the plurality of pages being one of a source page and a destination page for at least one of the plurality of links, the target page having at least one of an incoming link from a corresponding source page and an outgoing link to a corresponding destination page, each page of the plurality of pages having a corresponding creation time, the creation time for each page being one of known and unknown, the creation time of the target page being unknown, each page of the plurality of pages being associated with a corresponding creation time parameter T indicative of the corresponding creation time of the page, assigning an initial value to the creation time parameter T for each page of the page network, the initial value assigned to the creation time parameter T for any page having a known creation time being the corresponding known creation time, the initial value assigned to the creation time parameter T of the target page being a propagated value of creation time determined based on the creation time parameter of the corresponding at least one of the source page of the incoming link and the destination page of the outgoing link; varying the initial value of the creation time parameter T of the target page to maximize a page network probability P network , the page network probability P network being based on a link probability P for each link of the plurality of links, the link probability P for each link being based at least in part on a difference between a creation time parameter T of the source page of the link and a creation time parameter T of the destination page of the link, the difference being the age difference a between the source page and the destination page; and determining the creation time of the target page to be the value of the creation time parameter T of the target page which maximizes the page network probability P network .