Professional Development: It doesn't have to stop when the workshop ends!

Professional Development workshops are one of the methods used to keep teachers informed as to changes in curricula, technology, practices, etc. . For awhile now I have been wondering how to extend the grade level sharing and collaboration started in these workshop sessions. I enjoyed seeing the enthusiasm displayed as they share interests and ideas. Participants are generally keen to try out new ideas, but more often than not, they go back to their classrooms and continue teaching in isolation. However, I know that time is a major factor.

I decided to incorporate the wiki and blog online tools, in this pilot project, as a continuation of my latest workshop session. The teachers were informed to check for an email requesting volunteers. Once the target groups are identified, then instructions will follow. This is where I am at; in the process of creating a pilot project to engage our Early Years Teachers throughout our Division. Learning Experiences/Lessons will be posted as a beginning exercise to get their feet wet, so to speak.

I am seeking advice on various methods, strategies, etc., -what worked for others, type of feedback; as I begin my journey into the integration of Web2.0 tools for teacher use in the classroom. What resources are out there for them? What groups (wikis/blogs) would be best for them to join so they can learn from other educators outside their Division? What worked and what didn't for those who have been there, done that?
Thanking one and all in advance for all feedback/suggestions.