Are there any recommendations/studies on text readability comparisons among the standard web typefaces? The conventional wisdom for serif vs. sans-serif is that serif is better for readability (which is why the vast majority of books have body text printed in serif fonts), but I'm noticing that most blogs seem to use sans-serif fonts; the StackExchange series of websites and Github both appear to use Helvetica for text.
Horses for courses... web is not the same as print.
This from UrbanFonts:
I'd suggest an experiment in long-form, where you set the same text using different types and discover which best suits your use case, your design, and perhaps which progressively enhances into a webfont if you require that.
With tools like codepen you can quickly iterate on different fonts and font-sizes. On this codepen I've done so, but with webfonts: http://codepen.io/bmuenzenmeyer/pen/tsnqi With a couple seconds of effort you could replace it with the usual suspects.