ytmnd, an acronym for "You're the Man Now, Dog", is an online community centered on the creation of hosted memetic web pages (known within the community as fads, YTMNDs or sites) featuring a juxtaposition of an image (still or short animation) centered or tiled along with optional large zooming text...
Probably. A lot of things that have been copyrighted were required to have a copy sent to the copyright office and, by extension, the library of congress. At least in the past
In a ruling, opens new tab for Richmond, Virginia-based Valancourt Books, the U.S. Court of Appeals for the District of Columbia Circuit said the Copyright Office's demand amounted to an unconstitutional government taking of Valancourt's property.
The applicable portion related to these older works here
The Copyright Office requires a physical copy of any work published in the United States to be deposited with it. The office has said the requirement ensures that the Library of Congress "has an opportunity to obtain copies of every copyrightable work published in the United States"