It is stated clearly in Google’s Hidden text and links – Webmaster Help Center that the use of hidden text “can cause your site to be perceived as untrustworthy”.

Does it mean that a PR7 site can hide text using CSS and not get penalized?

I discovered the hidden text several months ago when trying to figure out how Google generate sitelinks for some of these high PR sites.

When I searched for free keyword tool, Wordtracker was Number 1 and appeared to be “authoritative” site with a list of sitelinks.

Initially, I didn’t want to blow up the matter and waited for the PageRank update to see if Google will take action and downgrade Worktracker.com but nothing changed. Worktracker continues to be a “trusted” site.

Now that we know Google “tolerated” certain hidden text technique using CSS, you may want to try it on a MFA or throw-away site. Here’s how Wordtracker did the trick.

Hide Text with CSS Position:Absolute & Left:-999em

The hidden words to be hidden were enclosed within <em> and </em> tags.

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The <em> attribute was modified with absolute position and the words were placed way out of the viewable area.

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Warning: Use the above Hidden Text CSS technique at your own risk! You may be penalized by Google eventually.