To help eBusiness and channel strategy pros gauge their partners' loyalty, Forrester has developed an indexing tool — the Partner Loyalty Index. Channel partner loyalty can be readily measured. For your partner portal and mobile apps, measure such partner activities as number of logins and login session times, content accessed or downloaded, application usage, online training, business plan submissions, and more. Add offline engagement activities and apply weightings to create an aggregated partner loyalty index. For a guide to using this tool, read our January 5, 2015, "Brief: Gauging Channel Partner Loyalty" report.