Let's just say that if YPN went international now, no one would make over $1 a day. The advertiser side is in poor shape, either because not many people wanting to go Beta or because they just don't trust Yahoo yet.
My earnings have been dropping more and more over the course of a year (I was in the first bunch of people accepted) which coincides with the amount of people joining. Just last week when YPN was having ad serving problems to certain IP groups, my earnings went up due to getting the higher paying ads which ran out quickly earlier, now that the IP issue is solved, down goes the $$$.
It's probably still good in a few areas, but mine has dropped a ton over the past year.