Google Blogger has a mobile update system you can use
http://www.cellspin.net/ GREAT FREE service that allows you to post where you want.
With CellSpin Mobile Application and SMS/MMS/Email service you no longer have to wait to get to your computers to post Audio, Video, Photos, Text to your favorite websites simultaneously like Facebook, MySpace, Blogger, YouTube, Picasa, Flickr, Live Journal and Live Spaces, with others to follow.
You can use SMS (text messaging) so you do not need a SmartPhone to send a message to your blog
Iphone has many apps that allow you to communicate from your smartphone to the blog
The idea of creating RSS feeds for search terms is especially interesting. Say you have a student that is doing a project or a paper on global warming. That student could actually create an RSS feed that would bring any news about global warming to his aggregator as soon as it was published.
Through different websites such as and Delicious- you can save, annotate, rate, organize and share the best links you find on the internet. You can share them with students and they can share with you.