Most Hollywood celebrities piled on the Twitter bandwagon long ago, but the craze has at last penetrated the outer reaches of the world's busy and famous. Within the last month, the social media site has added Bill Gates and the Dalai Lama to its users base.

Gates joined Twitter late in January, and the Microsoft founder announced his presence in typically businesslike fashion. "'Hello World.' Hard at work on my foundation letter - publishing on 1/25," he tweeted. Since then, Gates has posted regular updates on his tete-a-tetes with world leaders ("Great meeting w German Chancellor Angela Merkel. Again encouraged by what a stong and enlightened leader she is on intl development.") and retweeted several posts from his charity's Twitter feed.

The Dalai Lama made his entry into the Twitterverse on Monday and began a steady stream of tweets without fanfare or introduction. Though the Tibetan religious leader isn't doing his own tweeting, the feed is officially his. So far, there have been no tweets on the deeper mysteries of life, though the most recent update was useful for the Sunshine State followers of 'His Holiness.'

His Holiness the Dalai Lama in Florida - 23 February 2010 http://bit.ly/c5nrf4