How can educational leaders use blogs?

Blogging in the educational world seems to be very useful as a virtual sounding board. I feel that good administrators surround themselves with a select group of professionals whose expertise they trust in order to bounce new ideas off of, or request assistance from, on particular issues. Blogging can become an extension of that select group since it eliminates the barriers of time and distance. Administrators can take advantage of blogging at any time of the day, and correspond with other educators across the nation.