The example measures subscribers’ interest for two different topics (travel and cars). This requires two additional fields in the user profile. Every time the subscriber clicks on a topic-related link, the field content is to be incremented by 1. After a few mailings, subscribers’ interests become clearer. A recipient who only clicked on the travel link once is not nearly as interested as a subscriber with 15 clicks registered in his or her profile. You must create two Number fields with a default value of 0. Meaningful names would be INTEREST_TRAVEL and INTEREST_CARS.
1. | Click on Administration in the navigation bar, then on the sub-menu Edit profile fields. The contents area will display a list of all available user-defined fields. Click on the New field tab. |
2. | Type Car interest into the first field behind the Field name. Under Description, describe the field in detail – not much in this case. Under Field name in DB enter Interest_Cars. The name spelling need not be case-sensitive. The OpenEMM converts everything into upper-case letters anyway. Select Numerical as the field Type. The Length field need not be changed. The system sets 22 characters as the default value. Set a Default value of 0 in the last box. This means all profiles will start with the same value. |
3. | Click on Save to conclude your entries and close the field. |

Fig. 8.35: Create a new Number field entitled Interest_Cars.
4. | The second field denoting interest in travel is created in a similar way. The Field name is Travel interest, the Field name in DB Interest_Travel, the Type Numerical and the Default value 0. Store your entries by clicking on Save. |