Which font to use and why?

Unless you are expecting a lot of high profile traffic and need to have an A1 level of design, just stick to a built-in websafe font. It will keep your render times fast, and it's less hassle to maintain.

I use whatever the default font is on my personal blog [0]. I use Foundation CSS, and I'm not entirely sure what font that is, or if it is even altered from the default browser font.

Why?

-- I don't think that any font will enhance the content and concepts I write about.

-- I don't think anyone will pay attention unless it is bad. As I'm not a designer and I don't have the sophistication to know what the best choice is. I'm led to believe that some fonts are better than others, but I really don't know why and I don't feel like researching this.

-- I doubt anyone really cares that much, so why slow my site down or have a flash of unrendered text, which will both be negatively noticed, for no reason?

-- I consider myself a minimalist, and I prefer to present online presence in that way.

[0] coderedux.com

I think good look: Font Lato or Open Sans.