"One pleasure of being alive in the 21st century is the infinity of available tools. You don’t need them all – just the ones that work for you. "
I think it's important for teachers to be aware of all of the technology tools, and to maybe even kick the tires and take them for a test drive. And just like buying a car, you pick the one(s) that works best for you. So while a minivan is great for a growing family, a two-seater just wouldn't be practical. Same with all the Web 2.0 tools. Depending on your grade level, and subject area, certain tools make more sense than others.