Sometime on Aug 22, Vickram Crishna assembled some asciibets to say:
exchanging all of them. In fact, since these jokes are not taken down, it is clear the Google management tacitly approves, so they aren't really classic Easter eggs, though the jokes themselves are classic.
The one about SCO anyway doesn't seem to be google's doing. Free and open source software blogs and sites from across the world linked to sco's website with the afore mentioned word as the link text.
This automatically shot sco's pagerank up with respect to the word.