Google Adsense Font Size

I was interested to know if the font size for Google Adsense could be changed, and found the answer was yes and no. It all depends on the Google Adsense block size.

In short, you can only modify the font size for the 'leaderboard' and 'large rectangle' adverts.

In the SEOPedia article "5 Google Adsense Secrets, Tips and Tricks" Item 1 - Blend your ads. Adsense color and font size suggests only 768×60 and 300x250 Ad Units can be changed.