encyclo - 3:32 am on Jan 26, 2007 (gmt 0)
If you're using hidden text, then you risk drawing the attention of the search engines, whatever the reason you claim for its hiding. If the text is relevant to the content of the page, then you should try styling it appropriately but still showing it to all users. Otherwise, you are knowingly presenting different content to search engines (and yes, coincidentally, the blind) - and you must be prepared to fail a hand-check. Googlebot is just another blind user, right?