A tracking tag lets you add information to a hit about where the visitor came from. For example, the "Take The Tour" button on the home page has a source=front-page tag on it. Here are the hits on the tour link, shown by source tags:
| Period | front-page | tour-top-tab | business-card | tour-top-tab" | front-page" | N/A | front-page'123 | tour-top-tab'123 | "><h1>BlackHatCracker PRO hacked by hacklaplanete</h1>tour-top-tab | tour-top-tab'_ | "><h1>BlackHatCracker PRO hacked by hacklaplanete</h1>front-page | front-page'_ | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | 3019 | 1868 | 911 | 52 | 46 | 44 | 11 | 11 | 4 | 1 | 1 | 1 | 1 | 5970 |
Tags help you figure out where to focus your efforts. Do you get more traffic through Twitter or Facebook? From the front of an e-book or the back? If your links are properly tagged, you can tell.