You decide.  The website twitterhandbook.com thinks that it is, but they would, wouldn’t they?  Twitter is, indeed, a fast, cheap way to communicate and it may just be email 2.0, but you also have to consider your audience.  Some industries are slow to adapt technologies and others are on the cutting edge.  joycemckee writes about how she uses Twitter to research an upcoming event and also to promote her presence at a tradeshow through give aways: Read the full story