From The Learning Network, a New York Times blog:
What’s on your reading list this summer? Whatever you’re planning, and whatever your thoughts on the notion of “summer reading” in general, take to Twitter on June 7 and tell the world. Post [your] lists, recommendations, thoughts and ideas with the hashtag #summerreading that day.
The blog will be following and re-broadcasting their favorite posts. They offer ideas for topics and even tips on using Twitter.