A fanlisting is a place for fans of any subject where they can put their name and country in order to be listed as a fan of the subject of the fanlist. For exemple if you're a fan of the Jungle wa Itsumo Hare nochi Guu Deluxe OVA you're in the right place.
JwIHnG Deluxe is a series of 12 episodes (6 OVA and 2 episodes in each one) it takes place right after the end of the 26 episodes of the original Guu series.