I've already sent (via the "Bug" link in Safari) this issue and another. If you use the Newsletter template for a .Mac page and try to edit your text using Safari, all your formatting is lost. Paragraph breaks, to be more specific. After you click Preview or Publish, all your text is run together. VERY aggravating for this to be the case with Apple's own browser.
Of course, it is a Beta. I just use IE for my homepage now. Safari is still my new default browser and has a welcome spot on my Dock! Best Macworld not-quite-a-surprise since I switched a few years ago.