"Education is a progressive discovery of our own ignorance."
Brilliant ideas are meant to be shared so they can benefit others. In this technologically driven world, why not share lesson plans, creative activities, and stories about various experiences as a professional? Chances are someone out there will be thankful for your insights and advice!
Personally, I spend many hours browsing through Pinterest for arts & crafts ideas that I could use and adapt to my future classes. I already share a lot of my insights and experiences with regards to art, creativity, and generally being a positive person on my art page, but I know this blog will become an important part of my teaching career from here on in.