2. The method of claim 1 wherein identifying a plurality of candidate root nodes comprises identifying a first node of the plurality of candidate root nodes from a referrer tag as a first potential candidate root node.
2. The method of claim 1 wherein identifying a plurality of candidate root nodes comprises identifying a first node of the plurality of candidate root nodes from a referrer tag as a first potential candidate root node. 5. The method of claim 2 further comprising referencing the first candidate root node from the referrer tag against a list of active roots maintained by the computing system.