Because these invites generate Facebook and email notifications, they are much more
noticeable and could have a higher conversion rate than the Page suggestions. That said, accepting an invite still requires friends to click through to a particular Page.
Suggests Inside Facebook: "Admins of new Pages looking to establish an initial fan base should use the new 'Invite Friends' link that appears on their Page." What's more, "Adding a large number of admins that can all use the feature on their own friends could be an effective growth strategy for smaller Pages," it adds.