I chose my name because I didnt join for the Lotrforum but for the Matrixarea... and Exa is the name I used for Matrix forums the time I joined... well its the short form of "Exabyte"... exa means 1000^6, an exabyte is about 1 152 921 505 000 000 000 bytes... thats... 1024x1024x1024 Gigabytes 😛 and I love the word... now I definitely regret using a "matrixy" name and not one of my LoTR-ones... like Tarlancwen, Luinil, Beleveldis, Nieninque, Berúthiel, Myril etc
the ex- like in "ACCess", a like in "father" only shorter... not like in "cat" or "rat".