Matt Cutts On How Google Treats Hidden Content That Becomes Visible On Clicking
Matt Cutt’s latest video is about hidden content on websites that becomes visible when you click a button.
There is always general concern about hidden content and what is deemed to be hidden, but Matt Cutts reiterates it comes down to intention. If you are hiding 6 pages worth of content that is not meant to be seen by users and it contains spammy content then yes you run the risk of penalty for hidden content.
Here is the latest video from Matt Cutts