I have just reported two - one has listed the event date as all year so that it always appears at the top of the local events listings. Another was a course that started in April, so while it continued until July you could not actually sign up and participate now, so really it is no longer relevant.
These listings prevent genuine one off events being shown on the front page, so whenever the local user is on Talk or other areas of the site, without having to click on the events page.