Professional Development

Trying to figure out what I want to do for the professional development workshop is proving difficult. My original idea of looking at databases may not work. I was looking around for free databases that may be useful for teachers to use for students but I'm not finding the quality that I was originally looking for. My other thought was windows tools but can i really spend enough time talking about the different windows tools and applications? My last thought comes from the suggestion in the syllabus in web 2.0 tools. Blogging and video sharing sites are becoming more and more important in the classroom and a focused professional development on one of those topics could be very useful to some teachers.