USA.gov has put together the Government Gadget Gallery, a collection of gadgets (or widgets) from around the federal government, to embed into your blog, homepage, email and more.
The gallery went live in December with a small number of gadgets. The categories currently available are:
- Defense and International Gadgets
Thank the troops… - Energy, Environment, and Agriculture Gadgets
Environmental tips, Earth Day countdown… - Family, Home, and Community Gadgets
U.S. Postal Service Track and Confirm… - Health Gadgets
Drug safety, drug recalls, drug search, medical products… - Public Safety and Law Gadgets
FBI’s most wanted fugitives, FBI news, predators, missing persons, FBI history… - Reference and General Government Gadgets
Breaking Government News, GovGab blog…
What gadgets would you like to see added to the gallery?
View the complete list here and check back often for updates.
Socialfeds 
If I might add one…
Not specifically a blog, but hopefully it’s as useful as other government blog sites.
The Government Information Technology Wiki at http://govitwiki.com