I love it. Here are a few suggestions. Please accept them in the spirit intended, or feel free to ignore them.
1. Consider changing your TITLE tag to be the current USD value, as opposed to Bitval. Or maybe the current USD value then Bitval. Example: {title}17.9984 USD - Bitval {/title}. And update this with each change. That way my tab will have the current value in it, while I'm in another tab (in Firefox).
2. Move your footer down a bit - your Bitcoin donation number is colliding with your history column (in Firefox)
3. For a memorable name, if you would like a free redirect from myB.TC, let me know, and tell me what shortname to use. Perhaps myB.TC/current or myB.TC/value. Of course, you could always buy a domain name from godaddy as well.
Thanks a bunch for your ideas! I've implemented the 1'st one (great idea), and as far as I can see I've fixed the second as well.
For the third I'm not quite sure if it's a much better way to do it than what i'm already doing. But thanks for your proposal :-)
I will soon buy a domain for the website, after that it should be no problem.