NaijaPulse is a new microblogging tool. You can think of it as the Nigerian version of Twitter. You get to share updates of yourself (in 140 characters or less). SMS is not yet supported by this tool, so if you want to share on the go, you have to do it with the email functionality of your phone or BlackBerry. You can also link it to your Facebook (though I couldn't find how to do this) and Twitter accounts.
