I have used many frameworks of the past, but Bootstrap is in a different league coupled with LESS. It just is. I see Bootstrap as being not too dissimilar from

I have used many frameworks of the past, but Bootstrap is in a different league coupled with LESS. It just is. I see Bootstrap as being not too dissimilar from iOS UI. In the early days, you saw a lot of UI's built on Apple's native guidelines without much deviation. It was just difficult, the SDKs weren't fully baked for it. If you wanted to maintain compatibility as Apple progressed rapidly, you stuck to the basics. Now you're seeing all sorts of amazing UI's built upon a solid fountain for interacting with multi-touch mobile apps. Similarly, Bootstrap is an equally great foundation for building responsive web apps that just continues to get better. As it becomes more of a standard, then more time becomes available for the veneer. After all, that's really the only thing people are complaining about — something rather superficial and has no real impact on value of the product. What is does to the user experience is an open debate (more graphics = slower on mobile). I'm on my 3rd project with Bootstrap, and finally feel like I have a grip on adding veneer programmatically after some trial and error. Want to start a small-cap cash cow? Get some great designers together and go make the next WooThemes for Bootstrap.