Facebook Canvas Policy and PayPal payment in my website.

Ezybuzz,
We try to work very hard to stay within the App Policies from Facebook. Our Requests feature allows you (the admin) to setup requests that can redirect from the Canvas page as well and we specifically call out that policy number you mention.

In general, we've never heard of any of our users having our app disabled for redirecting from the App Canvas. We definitely do recommend having some 'purpose' for your App Canvas other than just to redirect.. so, if the user navigates your site in the Canvas, but can't do a specific thing while in there (making a payment), when navigating to that page, it'd be ok (in our opinion and reading of the terms) to pop the user out at that point.

The same goes for Requests. Some requests are better to leave the user within your App Canvas, others are not. As long as not all of your Requests pop the user out, that's a good indication that the 'primary purpose' isn't to simply navigate away.

Finally, we'll have to look into the payment issue you mentioned with SourceCoast. Hadn't heard of that before so we'll have to test ourselves, and possibly implement something like I mentioned above.

Hope that helps explain, but feel free to let us know if you have any other questions or comments.

Thanks,
Alex