The Two Sisters the website of the sisters who came up with the Daily 5: Gail Boushey and Joan Moser
Daily 5 Archives from their site
Daily Cafe the Professional Development site (subscription)
Amazon has lots of Daily 5 books and resources
Cybraryman's List of Daily 5 Links (Jerry Blumenthal is Cybraryman on Twitter; he compiles and shares resources on many topics!)
Kelly Jordan's Blog has many useful articles on the Daily 5
My diigo hits on tag "Daily 5" (please add more delicous or diigo collections!)
Livebinder on the Daily 5
classdojo a lovely new free online tool (August 2011) for rewarding good behaviour and recording off task or unwelcome behaviour in real time (using smart phone and computer/iwb) This could be tailored by individual teachers/librarians and used to reward pps for their responses to 5 a day.