Last.fm chart

Look a chart thingy! But my question is, is this a snapshot that will keep this week's list forever, or a feed of whatever week we are on that will update itself? Either way is cool, I just want to know which it is so I know whether it belongs in a post or in the blog template for a sidebar or whateversy.

Second question, why does it sometimes not show up, and why does the link go to my last.fm profile page instead of this chartamadoodle? I think last.fm doesn't have all the bugs worked out of their system yet. As another example of bugginess, I listened to a few tracks this morning, with last.fm active, and still nothing shows up in my list of "recent tracks". How much more recent does it need to be, exactly?