Lorem Ipsum is the most standard placeholder text used in mock-ups and wireframes. It helps to not distract the user with content but focus more on the design and/or layout.
BLOKK, which comes as a font, is a nice alternative to Lorem Ipsum. It has no letters but generates (colored) blocks instead.
Such blocks definitely helps concentrating on the layout more and makes more sense for websites with non-Latin characters.
Website: http://www.blokkfont.com/
