If you are a sports fan and you use Google Calendar, then you can import the schedule of your favorite team. The calendars of all the major sports teams are here.

The Personal Learning Network of a teacher in Quebec.
DonorsChoose is a website connecting teachers who need money with donors. I like the philosophy of this site because it allows donors to see the immediate effects of their contributions. Also, the small projects make it feel like your donation is making a large impact.
On a related note, it is sad that teachers are reduced to canvassing for basic school supplies. These are items that should be provided by the government. According to this article, the money spent on the Iraq War could have been used to hire over 7 million teachers.