Page View - A page view is tracked when a page with the
counter on it is fully loaded into the visitors web browser.
Unique Visitor - A unique visitor is defined as a
visitor that has not visited your web site in the past 24 hours.
First-time Visitor - A first-time visitor is a visitor
that has never visited your website. Visitors that have cookies disabled
will also be tracked as a first-time visitor.
Returning Visitor - A visitor is considered to be a
returning visitor, if they are a unique visitor and this isn't their
first-time visiting your website.
Repeat Visitor - A repeat visitor is a non-unique
visitor who revisits (or reloads) your page with the counter on it
within the time period that they are considered non-unique (24 hours
from their last visit).