This allows you to track custom affiliate links. A path of /go/ would match urls that start with that. The label is appended onto the end of the string "outbound-link-", to provide unique labels for these links in Google Analytics. Complete documentation on affiliate links is available {bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}1$shere{bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}2$s.