Via media-ocean I found an interesting map of the 'currently known' Social Web (a.k.a. Web 2.0). Here you might take a look at the map in full size. Interesting thing about, the sizes of the single areas (communities) on the map correspond to the approximate number of members. Also the layout has its purpose. On top, you'll find the 'practicals' (Yahoo, Windows Live...), while at the bottom there stick the 'intellectuals' (wikipedia, sourceforge,...). The left is more concerned about 'real life' (I'm missing XING...), while the right is more 'web centered' (second life, antropomorphic dragons, etc...). You can even find good old usenet ...but only as a dashed outline (maybe it is about (or has already) to vanishid and only remembered in old myths like the legendary Atlantis..)
Nice thing to notice, there's also Qwghlm....I can't remember having seen it on any map before :)
