On a serious note: Facebook is big, as in: it has a major significance, which will only increase for a long time to come. I expect it to become a political issue one day, if that is not the case already.
The reason I say I'm addicted is because it is the main medium for me to keep in touch with friends I made in Finland. But as a cultural geographer I'm fascinated by this 'global village'-phenomenon. One has to use it with care, though! Personal relations can derail because of Facebook, especially if you give too much weight to what happens on that site.
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