[halfbrown]

You know how when you buy a car, you start to see it everywhere? This sounds similar, and I feel ya. Yes, there are plenty of Bootstrap themes out there, but there are also lots for Foundation and any of the other frameworks out there. Some good, some bad. But Bootstrap does indeed have the Lion's Share of searches, it seems.

Like some of the other folks above mentioned, Bootstrap really was one of the first to gain in popularity (thanks, Twitter) and to that end it's no wonder. For the most part it's fairly simple to get started with, there's plenty of pretty decent documentation, and a bajillion examples to gain inspiration (or insight) from.

Personally, I like it. It's not perfect and can be bloaty (that's a technical term, naturally) but in many/most cases it works just fine if you've had some experience with it and know how to tweak things.