As a follow-up to last week's launch of font size controls, we'd like to let you know that we've just increased the default font size for AdSense ad units. This change will affect your ad units if you haven't yet customized your font sizes, or if your ad units are set to 'AdSense default font size' -- you'll notice that the text in your ad units is now the equivalent of 'medium' instead of 'small'. We decided to make this change based on publisher feedback and our testing, which showed that this increased font size improved performance.

If you'd like to change the font size in your ad units, you can do so on an account-wide basis or by individual ad unit -- just follow the instructions listed in our Help Center. Again, we recommend testing these new font size options with your existing customizations to determine which combinations perform best on your pages.