If you are worried that hidden text on your website might impact on your rankings then here is the answer. It depends upon if it improves the user experience.
Keyword: responsive web design
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Interesting posts from the worlds of programming, technology, search engine optimisation and online life in general.
Google is to penalise sites not optimised for desktop and mobile users. A look at what mobile-friendly means and the benefits of responsive web design for SEO.
Sites that use responsive web design will display content differently depending on whether you are viewing the site on a mobile device or not. Here I look at the first responsive website that I have worked on.