17. The computer-implemented method of claim 6 , wherein modifying an attribute associated with the output of the first content based at least in part on the determined lead interval comprises modifying the attribute if the lead interval satisfies a threshold value.
17. The computer-implemented method of claim 6 , wherein modifying an attribute associated with the output of the first content based at least in part on the determined lead interval comprises modifying the attribute if the lead interval satisfies a threshold value. 20. The computer-implemented method of claim 17 , wherein modifying an attribute associated with the output of the first content based at least in part on the determined lead interval comprises modifying the attribute if the lead interval is determined to at least one of exceed the threshold value for a predetermined length of time, or drop below the threshold value for a predetermined length of time.