The New York Times often has good election coverage, and the current race to pick a US presidential candidate is no exception. One of the gems on their web site uses an interesting data visualisation technique to produce a variant of a network diagram. The result is fascinating:

A good site for treatments on how to make your presentations more successful. Look out for the "popular posts" linked on the right - there are some good ones in there.

I have a home hub, and I found this page more useful than the manual that came with it.