1. A method, including: collecting digital content from a plurality of content feeds at a server-resident content dispatcher, the content dispatcher retaining information on each content feed, the information including an identifier or address of a corresponding content source of said each content feed; receiving a subscriber-provided affinity indicator from a subscriber, the affinity indicator including an indication of a content feed category of interest, the content feed category corresponding to one or more of the plurality of content feeds; filtering the digital content based on the subscriber-provided affinity indicator to produce filtered content; tracking interactions with the filtered content by the subscriber; automatically determining implicit subscriber affinity based on the interactions with the filtered content by the subscriber; enabling a publisher of at least one of the plurality of content feeds to insert a user-selectable object on a page of a content item from the corresponding at least one of the plurality of content feeds; and presenting the page of the content item with the user-selectable object thereon, on a display, the user-selectable object being configured to allow the subscriber to automatically subscribe to the content item by interacting with the user-selectable object when the page is presented on the display, the user-selectable object being further configured to allow the subscriber to select from among a plurality of notification options, the subscriber being automatically notified by the selected notification option when the content in the content item is updated, the plurality of notification options including email, Short Message Service (SMS) text messaging, and Twitter direct messaging, and enabling a 3 rd party to access information indicative of the implicit subscriber affinity via either a web interface or an application programming interface (API).