Convincing administrators about Web 2.0 in the classroom

I am extremely fortunate in having a building and a district that embraces technology in the classroom. Our administration reserves the right to question our use of technology (ensuring we are using it as the best resource not as the cool thing the kids will like). We do not have extensive struggles with implementing lesson plans and curriculum with technology components. If we can justify the educational purpose and the cost, if there is one, is reasonable, we are often able to get their support and access to the resources needed for such implementation. I jsut met with my building's LMS to discuss the support and availability of technology in my classroom for nedxt year. Not only was she ready to help and support, she encouraged me to pursue a few additional technology pieces. I have not met recently with my building principal on these thoughts but am fairly confident that she can be convinced of the pedagogical sense of this technology and will lend her support as well.