Both parody and emulation are matters of indirect representation because the original text or language is not referred to or even spoken about, directly. Rather, it is imitated, either in a straight forward way or ironically. Attribution should not be necessary in satire, but is polite in emulation. Not everyone who writes is worthy of either emulation or satire. They either have a particularly noteworthy style or they have values which strike you as absurd and in need of being mocked.
Satire is all over the Web.
In fact a good idea for a website would be one on satire on the web. After examining the ads, click on Create your own print ad. Their tips on creating your own ad are useful. Examine the entries for their Creative Resistance contest. There are many other sites that create satires of ads and their values.