Before you detail the design of your next website project you need to determine where should be what. You will have to place your navigation, images, texts, forms, whatever will be part of your site. Especially essential parts such as the navigational concept have to be planned very thoroughly. The information architecture decides if your project will be usable or not. Also important in your early concept is that nothing should be forgotten. The established way to deal with all of these challenges is creating one or more mockups of the project. Mockups are small models, sometimes even prototypes, sometimes only scribbles of the website under construction. They do not determine the design aka looks of a site but they define its structure and the navigational concepts. The brand-new web-app Moqups has been created to help you do just that, build early mockups of your next big web-thing.