A little about the mythology of Eris:
She is the Greek goddess of discord and strife, which is quite fitting given that the discovery of Eris in our solar system has caused discord. Eris is one of Ares' attendants. How appropriate that Eris was discovered while transitting Aries, the sign ruled by Mars (the Roman name for Ares). She is the daughter of Nyx (Night). She delights in war and the bloodshed of men. She is given credit for causing the Trojan War.
hmm... based on this bit of information, it seems to me that at this time Eris is an important archetype for people to be exploring within themselves.