Twitter, which started as a way for friends and family to share quick 140-character messages, has gone mainstream.  So much so, I’ve even heard suggestions that school districts consider using it as a means to notify parents and students of emergency situations on campus.

It's an interesting idea.  After all, Twitter is free and can reach hundreds, even thousands of followers in seconds. It can reach people by their smart phones, laptops, or desktop computers.

But it is also notorious for crashing.  It can't reach people with a voice message on their landline or...

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