The Raiser's Edge NXT Web View Online Presence type equates with the Database View phone types that have a format of Link. To add a new choice for the Web View Online Presence, create a new Phone Type in the Database View.

For example, to add a new online presence of Dogbook, add a new Phone Type with the Description of Dogbook and the Phone number type of Link in the Database View:
Database View phone setup

Online presence types will be present on the phones Links tab of a constituent record:
Database View phone tabs

These will correspond to the online presence types available in the Database View:
Web View online presence choices