"bitly hwcallrec" appears to be associated with HW Call Recorder
So bitly/hwcallrec probably points to:
Terrified, he tried to delete the directory. But every time he clicked "Trash," a new call would initiate on his desk phone. The caller ID simply read: SYSTEM. He picked up. bitly hwcallrec
A tracking tag: "hwcallrec" could be an abbreviation for something like "Homework Call Recording" or "Hardware Call Record." "bitly hwcallrec" appears to be associated with HW