Thanks for the reply, Delinda. Sales Insight does seem to be working, it simply doesn't display any activities, e.g. "No interesting moments". The score does come over to SFDC when updated in Marketo, although I had to manually "Sync to Salesforce" for that lead. The lead is a test lead with my e-mail address, and there are several leads with my e-mail address, can that cause a problem? Does a lead have to be unique in order to have interesting moments appear on its Sales Insight?