Well... What can I say? I heard about E2 when I overheard friends talking about it. I didn't have much of an idea about E2, or what it's goal was, but I think I'm getting the hang of it.
Personally I think the best thing about E2 is that there will always be someone's specific story about something, i.e. the nodes that tell a story about a major part in someone's life - that's what makes me node & read nodes until the wee hours, even if I have to get up at 8am.