I'm afraid this is the first I've heard of a "txt" flavoured Blosxom. Try dropping the "/+txt" bit from the end of the URL.
Reuters is also reporting today that Americans support the creation of a "Do Not Spam" list similar to the "Do Not Call" lists we've been fighting tooth and nail to get implemented lately. No kidding. The problem with spam is not lack of laws, though; it's the total apathy of law enforcement to prosecute spammers using the laws on the books and the "we're too big to be accountable" attitude of big ISPs like AT&T.