-NYC
-Berlin
-Ljubljana
-Chicago
-Detroit
-San Diego
-LA
-Toronto
-Dubai
-Tel Aviv
-Nairobi
...
This isn't news. Yes, believe it or not, most cities with a few hundred thousand people in them have a tech scene! (Especially the ones with a University housing a major CS department --- like Seattle!) Yes, it is 2014 --- the tech scene is mostly booming wherever you look, especially on a sufficiently long-term perspective. Really, articles of this sort are usually just self-serving advertisement for the city in question.
The truth is, of course, that the tech scene in most of these cities is not really booming in the sense of the word. Developing strongly is often a better way to put it, and the growth rate is often non-linear (probably more toward the logarithmic side of things) because founders of successful companies have a tendency to move to the Bay Area.