Having recently rediscovered the non-joy of putting somebody else's javascript on a page (in that case WebRing) I am a bit gun shy of the whole model[0].

I really like the idea of 'server driven charts' for easy web pages and illustration. But I would rather have it be something I could put on an Raspberry Pi in my network so that I didn't have to worry either about the privacy issues or it going away (as Chartserver has been trying to do :-).

[0] Imagine what will happen if placekitten.com gets sold to some porn aggregator.