I like bitcoin, a lot.
In a nutshell, bitcoin is an encrypted online currency which one can use in a way similar to dollars, euros, yen, or other currencies. It is used primarily online, but not exclusively so. In fact as the attached article explains, bitcoin is increasingly being used in the broader economy. For some it seen as a safe haven from the fiat schemes of the Fed, ECB, BoJ etc.
Like silver, everyone should have some bitcoin.
There are a number of interesting things about the linked article, but perhaps the most interesting is that it exists at all.
Bitcoin has been discussed in alternative financial blogs for over 2 years now, but this article is featured at AOL. Bitcoin is now being discussed by regular people, not just libertarian financial wonks. This is a good thing.