There is a LOT of stuff on the internet. Things to distract you and things to help keep you on task. The Big List of Online Productivity Tools is a list of apps and websites designed to help organize your life. While this list is a great idea, I was surprised at how many of the sites are now defunct. I couldn't find a date when the list was published, but the comment section has comments that are mostly from 8 years ago. While that explains the several non-working sites, I was also impressed with the number of start-ups that didn't succeed, or moved on to bigger and better things.
I really like to-do lists, so I was delighted that there were so many tools to choose from for making to-do lists. Remember the Milk stood out to me as one I might use due to its easy to read format and ability to work with Google Calendars, which I already use. I signed up for it, so we'll see if I actually use it! Another one I think could be useful in my PE classes is bubbl.us. I think it could be a creative way for students to demonstrate knowledge of the benefits of exercise vs. the risks of a sedentary lifestyle. Then they could email it to me.
One website that was not listed was Songza. It's similar to Pandora, but you can choose playlists based on mood and activity, in addition to genre and decade. I use it often in my PE classes to play in the background or as a timer (ie. when the music stops, it's time to rotate).