Take a look at the following question from StackOverflow (I can’t post a link since I’m a new member, so I have to copy/paste it):
We’re doing form validation with Yii’s
This method creates a UL in a hidden DIV, with one element containing the text "dummy":
Unfortunately, Google is showing that "dummy" text in the description for our page in the search results!
I’d rather not alter the core Yii code to get rid of that. But I also can’t find any way to tell Google not to display that.
I can understand that Google would index hidden text on a page, but to actually display it in the page description in the search results is very unfortunate.