Important note - I stand corrected on my last comment on the international adoption of myspace. As the chart below will show you, the global adoption of Facebook has absolutely taken off, with recent stats showing that Facebook is a particularly big hit in Turkey and South Africa of all places.

Another interesting stat I found that just blew me away is that the average user on twitter only tweets .37 times per day! The average twitter user only tweets once every 2-3 days! (To read more on this, you should check out Lightspeed's blog). They also do a great job comparing Facebook's status updates to tweets - turns out Facebook has about 2-3 times the number of status updates than twitter does....