2. The computer implemented method of Claim 1 further comprising: for each of the plurality of links: determining a set of potential topic descriptors for the linked content; selecting a topic descriptor from the set of potential topic descriptors; and storing the selected topic descriptor as a trending topic.
2. The computer implemented method of Claim 1 further comprising: for each of the plurality of links: determining a set of potential topic descriptors for the linked content; selecting a topic descriptor from the set of potential topic descriptors; and storing the selected topic descriptor as a trending topic. 11. The computer implemented method of claim 2 , wherein selecting a topic descriptor from the set of potential topic descriptors comprises: scoring each potential topic descriptor of the set of potential topic descriptors; and selecting the highest scoring potential topic descriptor as the selected topic descriptor.