It's been a fascinating thing because we didn't really know how to write when we started South Park at all. It's been like we've just sort of grown up a bit and it's amazing to just see how if you take Butters and Cartman and put them in any scene it works.
Buying books would be a good thing if one could also buy the time to read them in: but as a rule the purchase of books is mistaken for the appropriation of their contents.