So tracking is literally only for following footprings....
Continuing my example to expand on what Reaver stated.
Bill spots Ted out of the corner of his eye and starts running. A chase ensues and Ted can't keep up.
"Bogus!" Ted exclaims trying to catch his breath. The crowd seems to close in and Ted begins to panic.
"Where could he have gone?!" Ted looks around for signs of Bill rolling his Intuition+Tracking[mental] vs Bill's Agility+Sneaking[physical] since Bill is purposefully trying to blend back into the crowd (hiding his trail). Miraculously, and with the help of some edge, he follows the gaps in the crowd, as well as catching a few personalized vendors trying to get Bill to purchase their wares, and is able to find the café that Bill is now occupying with his arms around a rather attractive gal. Ted sighs and decides to call off the chase.