They all work all right in google Reader. The first looks the same as the one you posted (apart from the space in it, but I believe that is a typo). The problem is that it returns the page in ISO-8859-15 encoding, so my browser (chromium) reports erorr about unsupported encoding. Otherwise it works good. Maybe there is some parameter in the forum administration to change the encoding, but I guess only Mirek have access to that.