If you microblog with Twitter, SnapTweet allows you to include images from Flickr.
Tumblr is a simpler blog format - some describe as microblogging - allowing a mixture of post formats - text, link, image.
This is my experiment in shared microbloging using the open source software Chyrp. You are welcome to create an account and participate.
A microblog service focused on teachers and students.
Software for accessing Twitter, organizing
Tweetie is a Twitter client for the Mac (and iPod Touch/iPhone). Free and pay options.
Tweet client some contend more likely to be available (not filtered) in schools.
Twitter tutorials and educational strategies.
A microblogging platform - share short (140 character) comments with friends
My "short form" blog. I post mostly links to other resources here.