Penthouse
Websites in professional use templating systems. Commercial publishing platforms and content management systems ensure that you can show different text, different data using the same template. When it’s about controlling hundreds of articles, product pages for web shops, or user profiles in social networks, all of them potentially with different sizes, formats, rules for differing elements things can break, designs agreed upon can have unintended consequences and look much different than expected.
This is quite a problem to solve, but just doing without greeking text won’t fix it. Using test items of real content and data in designs will help, but there’s no guarantee that every oddity will be found and corrected. Do you want to be sure? Then a prototype or beta site with real content published from the real CMS is needed—but you’re not going that far until you go through an initial design cycle.
Lorem Ipsum actually is usefull in the design stage as it focuses our attention on places where the content is a dynamic block coming from the CMS (unlike static content elements that will always stay the same.) Blocks of Lorem Ipsum with a character count range provide a obvious reminder to check and re-check that the design and the content model match up.