Here are some of our observations on share button usage among the top blogs.

- Both Twitter and Facebook buttons are now more common that Digg buttons.
- Digg is no longer the king of social sharing, at least as far as these 100 blogs are concerned.
- Twitter is the most common share button. Two thirds of the top 100 blogs have a dedicated “share on Twitter” option.
- A Facebook share button is present on 58 of the top 100 blogs. In most cases, it’s coupled with a Twitter button.
- Digg buttons are present on just under half of the top 100 blogs. While we don’t know what this looked like a couple of years ago, an educated guess is that this used to be a higher number.
- Digg buttons are twice as common as Reddit or StumbleUpon buttons.
58 of the top 100 blogs include a general, expandable share this button; 19 of those blogs have no other share buttons.
- Dedicated MySpace and LinkedIn share buttons are rare, but they do show up in some of the blogs. We didn’t include them in this survey, though.
- 6 of the top 100 blogs have no sharing options at all.
- Email buttons are very common. We didn’t include “email this article” buttons since we focused on share options connected to specific services (like Digg and Twitter), but they were actually more common than we thought they would be. Had we included them, they would have been among the top sharing options.
- The war of the Buzzes. The “other” Buzz, the Digg clone from Yahoo, is currently a much more popular share option than Google Buzz, which only showed up on six blogs.