Open posting permits less rigorous items as well. The derisive term for this on MetaFilter is "NewsFilter" (or similar -Filter names for specific news topics, e.g. "IraqFilter"). Nevertheless, it is accepted that some discussion of current events and politics in particular is inevitable, and a certain level is tolerated. If more than one post is made about a news topic, the extras are often deleted and discussion is redirected to the "canonical" post about the topic, usually the first one made. Important news items or political arguments can turn into very long discussions, such as &lt;a href="9/11"&gt;9/11&lt;/a&gt; (2001), the London Bombings (2005), and Hurricane Katrina (2005)—which generated over 80 front page posts in about a week. The first example of this was arguably the 2001 Nisqually earthquake.