The fact that they have several themes to choose from is great! They are easy enough for beginners who want something simple but also customizable depending what you need in terms of design/theme. I've used them quite often when designing my own websites over time (and still continue today) because it's very intuitive how things work and look like compared to other bootstrapper sites out there. It would be nice if more templates were available though as some may not fit well into their existing ones. Also sometimes can't change font size which makes reading difficult at times too - just wish this didn't happen so much. Using BbBootStrap helps me keep organized by using categories instead of searching through all of the options one-by-one. This allows me quickly pick up whatever category fits best without having to scroll or search through pages upon page of results.