David:
Eeek! Please let article rating run experimentally for a while! We can wait on telling the world when we're actually getting useful results from it ...
I wasn't thinking of an announcement like "Wikipedia is now the greatest thing ever, thanks to article validation!" but something more along the tune of "Wikipedia launches article quality survey", as an invitation for outside individuals to participate. Such a press release could clearly point out the nature of the experiment.
Best,
Erik