It's not that common to see curved text on the internet.
If you wanted to style some text that way, till now you could do that with a couple of jQuery plugins, which however offer less power - compared to this plugin - and have some third-parties dependencies:
Both of those plugins shred the text inside the HTML elements they are applied on, then they build an arc of spans element, one for each letter of the text node. They leverage the CSS rotate() transform.