The New York Times is having a bit of fun; it notes that Monday is both World Poetry Day and the fifth anniversary of the very first Twitter tweet. To commemorate the day, they are asking for poetry within the 140-character Twitter constraint.
So, if you are a tweeting type, you can play along (or follow along) with the hashtag #poetweet. If you are a lover of poetry, you might want to stay away. Internet poetry is bad enough; inviting thousands (I have no idea what number to use there) of internet poets to write, using an arbitrary and unnatural 140-character hobble, is just asking for trouble.
Speaking of which, here was my first attempt:
Its a challenge;its really a feat/Im afraid tho its quite got me beat/this Ill leave 4 my bettrs/4 I need more lettrs/140s 2 few 2 #poetweet
There is one verse form that seems appropriate for Twitter, though:
The highway signs / you used to read / have been replaced / by Twitter feed. #burmashave #poetweet