Should be a one time fee of 500 points.
I was under the impression that the Browser was going to cost you 500 points regardless of whether you've downloaded it already or not. That Nintendo would somehow make the "trial" version inactive so that you needed to pay the 500 points to get the final version, but maybe they nixed that plan with already releasing a final version.
The browser itself isn't really that useful, unless you don't have a PC, but a number of sites have used the browser to add extra functionality to the Wii. Various sites offer different ways to stream audio and video on your Wii. I've tried out a couple of these and some work fairly well. Since the Wii can't really present video or let you play your own music (unless in the photo channel), the browser has gotten a lot more attention because of these sites that allow you to stream media to it.







