I don’t normally re-post articles regarding website data-entry and styling but I find myself having to re-iterate warnings against the over-use of uppercase or block-caps to clients continually, so this article from Roger Johansson, one of the web’s foremost authorities on accessibility issues, was nicely timed and is worth reading for all clients looking after their own website copy.
“Occasionally I come across websites that use uppercase text a lot. Probably the most popular use of uppercase is in navigation menus, which may not seem like a problem. Menus don't consist of paragraph after paragraph of text, after all, and it is generally the use of uppercase for entire sentences or paragraphs that is recommended against.”
“It tends to spell out some words letter by letter if they are in uppercase, even if the text is in lowercase in the HTML and transformed to uppercase with CSS”