2014 - please note that all answers here are out of date for years.
2014 - I hope someone publishes updated facts.
I am sure that you are not allowed to do this at this time - although these policies often change.
If you are interested in spam, donations (whatever that means) or viruses, then this “Android system” that Google launched to allow such things is exactly what you are looking for.
Sorry, I was wrong, you are currently allowed to do this:
21. Charity and Contributions
21.1 Applications that include the ability to donate to recognized charities should be free
21.2 Donation collection must be done via Safari website or SMS
This is the answer, April 2011. You must use one of the two methods in 21.2.
For the convenience of future readers: Trydis, who asked the original question, helpfully provided this wonderful URL link: https://developer.apple.com/app-store/review/guidelines/
Fatie
source share