If you're looking to try out some of these tools, here are the top 5 tools we recommend you try out (if you haven't already).
Slideshare - Get the credit and audience you deserve for your presentations! They may be embedded in a website just like this one or even on a fancier site like the NYTimes, etc.
Scoop.it - A stellar social bookmarking service that is being used by a ton of teachers right now. We try our best to keep the Edudemic Scoop.it feed updated!
PlanBoard - It's an online lesson planner made for teachers. Create, share, and manage lesson plans with simple and easy to use lesson plan templates.
Evernote - Featured in Edudemic Magazine numerous times, we love all things Evernote. It's insanely popular in education and useful for teachers, students, parents, and just about anyone who wants to remember what they've done.
Dropbox - I use Dropbox every day. I had to up to the 100GB size and feel like I'll never fill it up. Great for backing up everything, accessing files remotely (even from your smartphone and tablet) and sharing things. I've seen it used for handing in homework on a regular basis. Also, you can get an extra 3GB free if you have a .edu address!