I have just written article about my experience implementing Paypal subscription model. It is quite limited if your startup sits in Eastern Europe (probably in other parts of the world as well). Hope it can safe some time fro someone else. It took me few days to research the whole situation.
Here is the link to the article.
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Wednesday, December 1, 2010
Implementing Paypal recurring payments for Quantify
by Roman Leinwather
