So many internal IT departments don't have the luxury of a designer, so Bootstrap is great for them. All of our internal tools were old-school, table-based layouts and slowly they're making their way to Bootstrap because the pure coders there can implement it easily for all the boring dashboards and intranet level things.
Right, I also don't think it can be underestimated the useful power of Bootstrap's documentation: it is very well put together in terms of being a largely well organized palette of options with copy and paste code directly beneath living examples. It's much easier to point non-front-end developers and junior developers at Bootstrap's documentation and tell them "find what you need and use that" than with many of the alternatives.
Admittedly semantic classnames are nice to haves, but they become a vocabulary you have to teach others, whereas Bootstrap has built a useful enough shared vocabulary and strong enough documentation on it that it is rather reliable across the spectrum of developer skill level and familiarity.
Exactly. As someone who has spent a lot of time writing intranet sites as a one man army (with more strength in application development than design), Bootstrap has been a godsend for me.
