Twitter Resources

Hi everyone! 

I'm probably a little behind and I'm sure many of you are aware of how great Twitter can be for sharing resources but I got the opportunity last week for my grad class, "Educational Innovations" to have class via Twitter and my eyes were opened to the amount or resources that are available.  We got the opportunity to share and explore others resources and I was amazed with how much sharing of information is going on. We were asked how we thought we could use Twitter for professional development.  Do any of you use Twitter in your school?  How do you use it specifically?   

Thanks for your input,

Wes