Even if you manage to log in here, there’s nothing much to browse here. It’s just the mObywatel’s UI components’ code.

Which by itself is useless.

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While not directly related to RSS, Polish Central Bank provides currency rates for most popular currencies via XML (it’s in Polish, I was unable to find instructions in English). I think this may suffice.

Technically this was supposed to be a replacement for RSS channels but most modern readers seem to support both standards now.