A new URL?

Well, as you can see, my URL is actually related to the Halo game series, and it makes me look like some military guy or some Halo fanatic(not that crazy about halo but ya...), which I apparently am not. So, I have been thinking about changing the URL... But I have no idea what to change it to. I would prefer to name my URL as a "place" like "office-of-naval-intelligence" which is a "place", while my blog will still be "Ephemeral Fireworks". Any ideas? Also, when I change the URL, people might not be able to visit my blog by typing the same URL again... Hmm... What should I do?