Smart people work on both side of the spam fence, read on for a kewl trick to get spam throuh filters, and then realize how hard it must be to write those darn filters...Uh-oh: Spam's getting more sophisticated - Computerworld "The most dastardly thing I've seen so far," Graham-Cumming said, involved words that were printed vertically within the raw HTML text, l i k e s o . The HTML message then used tables to reassemble the words and display them horizontally again. The result: Antispam filters didn't understand that the words in vertical format were spam, and let the message through; but the HTML displayed normally to recipients. "This is ingenious," he said. The lesson for those writing antispam software: Filters need to understand how HTML is displayed to the end user, not merely look at the raw text.