[fookyong]

nice proof-of-concept but after looking at the libraries and non-standard css required, I couldn't help but think "...yeah or I could just do them in photoshop".

the A/B test fanatics out there will cry "but this will allow you to test hundreds of different CTAs in a fraction of the time!" - which is all well and good but really, if you're a startup and you're analyzing to the extent where you are trying out hundreds of different CTAs and need a framework to manage it all... you should probably read this:

http://en.wikipedia.org/wiki/Analysis_paralysis

and focus on building a feature that benefits a customer.

[bradgessler]

Faster page-load times benefit the customer.

[psadauskas]

I like being able to change the wording of my buttons, and the color, and everything else, without having to leave my text editor.

[sp4rki]

Libraries? Do you mean Sass and Compass? You don't need them to make the exact same effect, but it's just smart to do so because it will take you a lot less time and headaches. Besides, you just serve a compiled version so you're basically retaining the ability to create and define multiline buttons in CSS3 while retaining the ability to edit your source quickly and easily in Sass/Compass. And yeah I'd also make an image version for the browsers that don't support it CSS3. The benefits in loading time, bandwidth, and fewer http requests are worth it.