I started to host two Yggdrasil nodes today, one in Marisa (New York, USA) and Suika (Sao Paulo, Brazil)
The Brazil server was specifically rented just to host a Yggdrasil node on South America, since there is already public nodes on Europe, Asia and North America, but there was none on South America so that was disappointing for me.
Take the Brazil node as a little experiment to see how well it preforms and too see how used it is on IP addresses from South America.
Feel free to peer with them! More information here