Personally I'm a fan of bigger font sizes. Interesting though that Facebook actually reduced their body copy down to 11px, and apparently they are doing pretty well ;)

Definitely also just had mentioned the same thing before reading this. But do you think that they should increase their size? I often tend to look closer to read posts and also just followed their font sizes in a similar project =\

Does the median Facebook user have younger eyes than the rest of the web?

A counterpoint: NYTimes.com sets their article paragraph font size at 1.5em (with a roughly equal line height).

I'm 24 and I still even zoom NYT (though that may be just so that the article fills my view.)

Facebook also has a lot more elements (basically, images) to deal with than an average website with significant lengths of (narrative) body text.

I think facebook has more going for it than the fontsize.

As mentioned before http://fontsquirrel.com is a great resource, which includes a good cross-browser css snippet for embedding webfonts http://www.fontspring.com/blog/the-new-bulletproof-font-face... On our site (flup.com) we've used Chunk Five as our logo font and Museo Slab as our headings font along with Lucida Grande for body copy. We've also used line-heights and font-sizes from the Blueprint Framework http://www.blueprintcss.org/ Good luck, Michael.