Here we focus in on those sites that report that their websites generate either minor or significant revenues and compare them against those sites that report losses. Let's see if there's anything to be learned...
While this is speculative based on the small sample size of the data at this point, it appears that revenue generating websites are much more likely to have photo galleries (68% vs 34%) and FAQs (42% vs 24%) than money-losing non-profit websites. Also of note is that simply having donation capabilities does not equate to increased revenues via the website.