Twitterfone allows you to send a tweet from your phone or cell phone by dialing a US number and leaving a message.
Here are a few tools that Blog Training Academy has used to boost social media profiles.
Posterous.com
I love this tool because it feeds twitter, friendfeed, facebook, and other social media sites. Post information from multiple email addresses or even a cell phone.
Zannel.com
This is twitter on steroids! Post pics, short messages to a multitude of social media [...]
