Draftium is a turbo prototyping tool which helps you to build a website structure in a few minutes with ready-made blocks.
I have been testing alpha version of Draftium before the launch and must admit it has greatly simplified my work. So when I need to create a landing page, I make a quick wireframe (with copy) in Draftium and pass it on to UX designers. They already see what I want to get as a result and so we spend less time on numerous iterations.
Clean and simple UI, saves a lot of time
Would like to have a greater choice of blocks but I think they'll do that
Awesome tool for marketers and those who just want to build trendy website within few hours.
Made a prototypes of my company's landing pages.
I believe it doesn't have any cons.