I came across Bootstrap yesterday, and it is just delightful. One of the key problems for a small startup like Querki is that, while I have a reasonable amount of programming talent, I can't design my way out of a paper bag. Bootstrap is for people like me -- it's a lot of common design principles, best practices and widgets, all wrapped up in an easy-to-integrate package. The look-and-feel is a bit bare-bones, but it's not *ugly*, and that's good enough to get me started, until I can afford a proper graphic designer.
So don't be surprised if Querki initially looks a fair amount like the Bootstrap site. We'll probably iterate that gradually, but it's a nice starting point...