Today is World Poetry Day, as well as the 5th anniversary of the first twitter message. Randy Kennedy has an article in the NY Times about how “poetry and literature may be flowering in the socially networked, microblogged world of the tweet.” To celebrate Poetry Day, the Times “asked four poets each to write a poem within Twitter’s text limit of 140 characters — the contributions by Billy Collins, Claudia Rankine, Elizabeth Alexander and Robert Pinsky are here. You can also share your own poems on Twitter using the hash tag #poetweet. Or just read them here.