Note: This calendar view maps the number of captures of https://accounts.google.com/ServiceLogin?continue=https%3A%2F%2Fplus.google.com%2F103768702896489662132%2Fposts&followup=https%3A%2F%2Fplus.google.com%2F103768702896489662132%2Fposts&osid=1&passive=1209600, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.