Starting out saying how incredible Piwik is. Very impressed here. Absolute genius.
What might be good, especially for commercial credibility to the clientele, is a growing line of national flags appearing at the bottom of the page.
It wouldn’t have to say anything, simply link back to Piwik perhaps but in whole, if each visitor created a flag to appear on their visit and perhaps a visitor
number above or below that flag, the enhancement would be positive.
So as you go into that page at the bottom of it you would see the degree of international interest that page or site had generated.
We used to have something like this for PHP BB v.2. I believe.