See how "the rest of us" mark each holiday season.
Now that George Takei converted to Tumblr, we thought we'd show him what other stars get their microblog on.
Dinner for Twitter: How Anthony Bourdain satisfies online appetites
Social news site Reddit has been around for five years and counting and records over a billion page views a month. But it seems celebrities have only just realized how to use the site for self-promotion.