Google is currently beta testing a new feature on Blogger powered weblogs (aka blog*spot) which will allow users to integrate features usually seen on iGoogle within their site.
The Gadget directory is the same one used on iGoogle, which means there are thousands of Gadgets available for you to try.
Despite the fact that Google gadgets were primarily made for iGoogle, blogger users focusing on a certain niche (such as video games, politics, travel, science, finance, etc.) may find some of these features to be complimentary to their site.
This feature is only open to “the draft” version of Blogger (or draft.blogger.com), which is basically is an eternal beta site for Google to test out new features before rolling them out to the rest of the population.
Note: Users can apparently insert Adsense within an iGoogle feature, which may present another opportunity for users to earn income by creating popular gadgets.