Rites of Passage for Facebook

What are the stages in the "Rite of Passage" of something new getting into the mainstream?

For Facebook, the ticks on the "rites of passage" checklist are coming thick and fast:

1 - A full page article on Mark Zuckerberg in the FT yesterday. How respectable is that?

2 - A "rumour" that Microsoft has bid $6b for Facebook. How "kiss of death" would that be?

and finally

3 - It get's a mention on the Archers. (Tom Archer casually mentions that he's on Facebook at the Young Farmers Ball on Tuesday) How really, really cool is that!