Method of determining and transmitting potentially viral media items based on the velocity measure of another media item exceeding a velocity threshold set for that type of media item

A method comprising:

• determining, at a server, a velocity measure for a first media content based on a determined change in an engagement rate for the first media content, wherein the engagement rate of the velocity measure is weighted based on an attribute of the first media content;
• determining, at the server, that the velocity measure for the first media content exceeds a velocity threshold that is dynamically determined based on a type of the first media content, wherein different types of media content have different velocity thresholds;
• and
• transmitting, by the server, a second media content that is selected from a plurality of scanned media sources, wherein the second media content is selected based on the first media content and based on the determining that the velocity measure for the first media content exceeds the velocity threshold.