I just paid for another year of a custom domain name for my email newsletter:
Now, this isn't exactly the easiest url to spell and thus it has almost zero utility, except for the fact that it's cool.
I mean, I think it's cool... and I guess that's all that matters.
But, normally, I'd recommend buying a short-domain or custom domain / URL that's easy to remember and share. Do as I say, not as I do in this instance!